You need to start working out 
by Musclehead



"Tim, you need to start working out." Candice, Candy for short, was lying on
the living room floor, watching TV. She glanced over at her step-brother who
was sitting in a chair, also watching. He was in a tee shirt and was wearing
those "lounge shorts" as they're called, but they really look like boxer style
underwear, just made of heavier material.

Candy was wearing skin tight exercise shorts, just like always. She had long,
muscular legs and an awesome round ass, honed from years of running. She liked
showing off her body and would walk around the house in those short shorts all
the time, even as she would complain that she was cold during the winter. He
was home from college, she from her job in the south, both of them were there
for the holidays.

Both Tim and Candy were tall, Candy at five-eleven and him at six-two. They
were both pretty much ectomorphs, the only real difference in their body types
through all their lives was her strong legs compared to his. Tim's were rather
spindly to say the least. Other than that, they could have come from the same
parents, that's how similar their bodies were. In spite of her relatively thin
body, Candy did have some pretty nice tits, and she was very beautiful.
Wherever she went, she turned heads with her beauty, her height, and that nice
combination of tits and ass.

At the beach when she was sixteen, her Mom, Mary and her step-dad, Bob, went
for a walk along the water, leaving her sunbathing. Already aware of the
beauty of her body, Candy was wearing as tiny a bikini as any prudent parent
would allow, even ones as progressive as Mary and Bob were. When they
returned, a sleeping Candy was unaware that close to ten boys had taken up
residency around her beach blanket.

Back to the present: "I don't need to work out, obviously I don't have a
weight problem."

"Yes you do. You're underweight. You look really weak."

"I'm strong enough, stronger than you."

"I doubt it. Look at my legs. Both my thighs are almost twice as big as yours.
Look at these calves. And watch what happens when I flex my butt muscles."
While still lying flat on her back she squeezed those beautiful globes and her
entire pelvis rose up a good four or five inches.

"Well, what do you expect? You've been running all your life."

"That's my point. And I started doing cross-fit a half a year ago. If my legs
got bigger and stronger than yours ... .."

"Your legs are bigger, I didn't say they're stronger."

"Well they are. And I'll bet my upper body is also. If my legs got stronger
from doing something while you did nothing, it would make sense that my upper
body would do the same. I'll bet I even weigh more."

"Do not."

"I weigh one fifty-five. I've gained five pounds since I started doing
cross-fit. Mom told me you only weigh one-forty-five. That's not very much for
someone who is six-two. Ha, I even weighed more than you before I started
working out. I'll bet I could kick your ass."

Both Mary and Bob were sitting on the couch, half reading, half watching the
TV, ignoring the kids until that last comment. Mary's attention was drawn when
she heard her name mentioned regarding Tim's weight. Bob perked up when he
heard Candy say that she could kick Tim's ass. Both parents were extremely
fit, working out regularly with a devotion that put so many young people to
shame. They ate well and looked many years younger than they actually were.

They had been attracted to each other's physical attributes at the start of
their relationship several years ago. And while it had been the norm, indeed a
stereotype that women are attracted to strong, healthy men, it was a somewhat
newer phenomena that women were getting stronger or that men might like this
new look. Bob was unabashedly attracted to this kind of woman. Mary had some
pretty good guns which Bob loved and he was always disappointed when he
unsuccessfully tried to get Candy to do more upper body work, pointing out
that her mom's upper body added to her physical attraction.

"I like my skinny arms and small shoulders," she would say, much to his
chagrin. Bob was a good husband and step-father and he had no interest in his
step daughter, but he was a man and there was no denying her physical beauty.
While most guys got instant boners when passing her on the beach or whatever,
Bob quietly encouraged her that if her upper body matched her lower one, she'd
look even better, if that was possible. He knew it was. He wasn't a creep or
anything, he was just a man who liked strong women like his wife and
encouraged his step-daughter to be the same. He wondered what made her change
her mind and start cross-fit of all things.

Back to the escalating conversation between Candy and Tim: "You could not kick
my ass, that's ridiculous. You're a girl, I'm a guy."

"Ha. You know how strong your dad is? There are girls, women, at my cross-fit
gym who are stronger than him. And I'm not talking about huge amazons." She
looked over at Bob. "Dad, how big are you, you know? I know you're not very
tall, at least three inches shorter than me."

"I weigh about one-sixty-five."

"How strong are you, let's just say, how much do you bench-press. That always
seems a good gauge."

"Two-twenty."

"That's pretty good for a hundred sixty-five pounder. Great for someone in
their sixties." She turned back to Tim. "There's a woman at the gym who weighs
about one-sixty. She does two-sixty. She could kill you with one arm tied
behind her back. Ha, ha, ha."

That mocking laugh of her infuriated him and next thing you know, he was out
of his chair and leaping towards the still laughing Candy. He was sort of
sitting on her stomach as he pinned her arms down to the sides of her head.
Bob was thinking to himself that that laugh of hers had always been a source
of her trouble with guys, in spite of her great looks. He thought it always
sounded like she was laughing at guys instead of with them. So he didn't
interfere as Tim pushed her arms down.

Candy continued to laugh a little more. Then she stopped and stared at Tim for
a few seconds when suddenly her legs came up, wrapped around his upper body
and around his arms. A powerful squeeze brought his arms inward towards his
chest, immediately breaking his hold on her wrists. Then she brought her legs
back downward, slamming him onto his back as she applied so much pressure that
he was screaming for mercy right away, her mocking laugh having resumed as he
struggled with the intense pain.

"Let him go, Candy." She released him as soon as her mother spoke, bouncing to
her feet and offering Tim a hand up. Angrily, he slapped her hand away,
getting up and making a hasty, embarrassed retreat up to his room.

Candy looked over at her mom and step-dad, and shrugged her shoulders. "I
didn't even have to show him my new upper body strength." She came over and
kissed them both goodnight and as she turned to leave, Bob couldn't help but
notice that her awesome ass was looking even more impressive than in the past.

The next day, the good natured Tim wasn't mad anymore. Candy had already gone
for a long run and joined Tim at the breakfast table. "Are you done working
out already, Candy?"

"No, just my run, ten miles. I'm going to lift as soon as I've digested my
breakfast a little. Wanna join me?"

"Yeah, I guess so," he replied rather sheepishly. "You're legs are really
strong. I couldn't believe how much it hurt when you squeezed me last night."

"Sorry. I didn't mean to hurt you. By the way, I wasn't using all my strength
'cause I was just fooling around."

"Are they that strong just from running?"

"No, I do squats also."

"And you think you're arms are stronger than mine also?"

"Yeah, I'm sure they are, but I said upper body, not just arms."

"What do you mean?"

"Core strength is just as important as anything. I can do hundreds of
crunches. Didn't you notice when you were sitting on me last night how hard my
stomach was?"

"Yeah, I guess so."

"Well, I noticed how hard your dick was. Ha, ha, ha." An embarrassed Tim
looked at the floor. "You're turned on by the idea of a woman being strong.
Ha, ha. Just like your dad."

"I guess so. Don't laugh at me."

"I'm sorry. I wasn't laughing at you. It's just since I've been working out it
seems that guys are getting even more turned on by my body than they used to
be. Anyway, in addition to the crunches and other stuff, we do this thing
where you hold a barbell with weights above your head, at arm's length while
you do squats. It's hard as shit, taxes the whole body. Your arms are burning
and you're entire torso is focused on keeping balanced, plus of course, it
fries your legs. I do it with sixty-five pounds. No offense, but just starting
out, I'll bet you couldn't do it with twenty-five. That woman I was telling
you about, she does it with one thirty-five."

"Wow."

"I want to be that strong someday. She is soooo awesome."

"I'll bet she looks like a Mack truck."

'No, you're wrong. She looks great. Someone once said, behind every curve is a
muscle, and let me tell you, she's got some curvy muscle. She's so hot. Every
guy at the gym wants her."

"Sounds like you do too."

"Ha. Well, if I ever wanted to be with a woman it would be someone like her.
Let's go work out."

Even though Tim was real curious, Bob too, as to how Candy's upper body had
changed, they were both disappointed that she kept a long sleeved shirt on all
the time when she was home. That made sense since it was winter and the house
was a little cool sometimes, even though that didn't stop her from wearing her
shorts all the time. Candy instructed and Tim listened as they went through
the workout. When they got to those overhead squats, she took the twenty-five
pound bar, empty of any plates and demonstrated for him.

Tim was able to do them with no problem but admitted he could feel it all
over. Candy did a warm-up set with forty-five, then she offered, "Do you want
to try with more weight?"

"Sure." He struggled to get that same weight over his head, but when he did,
he was able to do five reps, but not going as deep as she did. She did a set
with sixty-five, those beautiful glutes almost touching the floor, doing ten
solid reps. Then Tim tried fifty and could not get the bar up over his head.

"That's okay, Tim. That was pretty good for your first time. You know, they
have really strict rules at the gym. Until an instructor gives the okay, they
don't let you try certain poundages and sixty-five is the limit they allow
women until they get to the more advanced classes. But my instructor isn't
here right now, is he?"

Tim went to get a drink as Candy put some more plates on the bar. He watched
in awe as she pushed it over her head with complete confidence and did ten
more deep squats. "Yes," she squealed. "I knew I could do it. I was feeling
pretty strong today. Plus, I think it helps to have my little brother to show
off to." As Candy went to set up for their next exercise, she explained that
with cross-fit, they'd be doing a WOD, a workout of the day, maybe three
exercise done in sequence a certain number of times. "It would be too hard
though, your first workout and all." She looked over at Tim, who had gone
almost white as a ghost, having just figured out that his older step-sister
had done this difficult move with more than twice as much as he did, and for
more reps with better form. "Well, do you still think I'm not as strong as you
with my upper body? Ha, ha, ha."

Tim was able comprehend that Candy was stronger than him, a lot stronger, but
it didn't dawn on him they she might be stronger than a lot of men who didn't
work out, even ones who weren't as skinny as him. And probably a lot of men
who she dated didn't realize it either. So when she came home early from her
date that night, it was obvious that she was upset. "What's up, Candy?"

"I thought that guy was cool, but he sort of freaked out when I beat him at
arm wrestling."

"I thought you said that a lot of guys were cool about that, even excited."

"Well, we were at a bar, so it was in a public place, and I beat him real
easily. I was even able to hold him off when he used two hands, although I
couldn't beat him that way. Anyway, he got real embarrassed, and then it only
got worse 'cause when he got up, you could see the wet spot on his light
colored trousers. Ha, ha, ha."

"You mean, he ... ,?"

"Yeah, in his pants. And when I laughed, he said I was mocking him. As I
pointed out that it must have excited him that I was so much stronger than
him, he stomped out and I followed, not wanting to end the evening that way.
When we got outside, he called me a bitch and took a swing at me. Big mistake.
I ducked and hit him in the stomach, just once. He's probably still bent over
wretching. Ha,ha. Where's Mom and Dad?"

"They went to see their friends that live two hours away. Remember? They won't
be home 'til tomorrow."

"Really? Hmmmmm." Candy went over and stood in front of Tim. "Timmy, it looks
like you got a little excited hearing my little story."

"But I didn't ... "

"But you're hard as a rock, I can see that." Candy stepped back a little and
unzipped her skin tight jeans, kicking her sandals off as she removed her
pants.

"Wwwwhat, what are you doing, Candy?"

"I was hoping to get a little action tonight with that weakling. You know,
being horny all the time kind of goes with the territory of being strong." By
that point her shirt was off. Tim stared in disbelief, unable to move. She
stood before him in a tiny white cotton thong and a bra that barely covered
her big, round tits. God, what a body, he thought. She had always been so hot,
but now she had a hint of abs and though you wouldn't call her muscular, it
was obvious that she was in great shape. Her shoulders and upper back had
definitely gotten broader and there was no doubt that her arms were bigger
than his.

"Candy, we can't do this."

"We're not related, you might remember."

"You were here when I was born, seven years old already."

"So."

"No." Even as he protested, Tim's crotch was betraying him. It was obvious
that her fit, beautiful body was really turning him on.

"Try to stop me." She grabbed him by the shirt and yanked him off the couch,
turning and flinging him onto the floor. In seconds, his shorts were off, his
t shirt torn away from his skinny body. She left her bra and thong on, finding
it more arousing to pull her the fabric aside as she planted her shaven pussy
on his face forcing him to eat her until she climaxed. Then she turned around
facing towards his feet and resumed the position, her pussy to his mouth as
she leaned down and slowly licked his very long penis from one end to the
other. She remembered that old saying that tall skinny boys "are all cock" as
he ejaculated into her mouth in seconds.

They fucked and sucked for almost two hours, Candy doing most of the work
since she had already worn him out after the first fifteen or twenty minutes.
When it came to sex, she had always been active and enthusiastic, but now she
was getting downright domineering with most guys, completely overwhelming them
with her strength and sexuality. And with Tim, as with so many other men ever
since she started doing serious working out, she noticed his hands exploring
her flat, hard tummy, and her strong arms and legs as much as reaching for her
tits. But towards the end, it was all Tim could do to lie on his back and
lick, as she experienced one orgasm after another, her back arched, staring
blankly at the ceiling, pinching and fondling her breasts herself, her bra
having come off somewhere along the way, as she rode his face until he passed
out.

They hadn't fought, but she had very clearly kicked his ass badly in two
different kinds of physical activity and the next day he was a wreck. They
corroborated their stories that he was tired and sore from his first workout
with weights. Both understood that it would be best if Mom and Dad didn't know
anything else. The next day, she went back to South Carolina to resume her
job, and to step up her workouts.

End of part 1