Boys have a great increase in muscle size and strength, together with a series of physiological changes making them capable of doing heavier physical work than girls and of running faster and longer. These changes all specifically adapt the male to his primitive primate role of dominating, fighting, and foraging.
Males have a greater amount of muscle bulk.” “A man's leg is about 80 percent muscle, compared with about 60 percent muscle in a woman's leg. That extra muscle can help men run faster. Also, men's muscles tend to have larger fast-twitch muscle fibers, which help with sprinting, than women do.”
Furthermore, the performance on each sprint phase is uniformly affected by the chronological age. Boys run faster than girls in all running phases, and the span between genders increases after the age of 15 years.
The angles of the hips & legs of female runners would tend to cause them to twist from side to side. In contrast, the relatively straight angles of male runners allows them to keep their body position facing forward.
As strength starts to improve, especially for boys, movement time improves, which influences upper-body quickness and running speed. Similarly, as leg strength improves, children start to push more forcefully against the ground and are able to drive their bodies forward much faster.
A weak core, weak hip flexors and weak glutes are three particularly problematic areas we see that can make for the biggest setbacks. Insufficient speed training – we see a lot of kids that love one, or a few, sports.
Again, in most cases, even during childhood, exercise or running specifically won't really make the child taller, nor should it stunt growth.
Among humans, women's life span is almost 8% on average longer than men's life span. But among wild mammals, females in 60% of the studied species have, on average, 18.6% longer lifespans.
A woman who stays fit by running is considered attractive by 35 percent of men—coming in second only to a woman who makes them laugh.
Success in distance running and sprinting is determined largely by aerobic capacity and muscular strength, respectively. Because men possess a larger aerobic capacity and greater muscular strength, the gap in running performances between men and women is unlikely to narrow naturally.
During puberty, body size increases for both sexes, but boys also get a burst of testosterone which results in larger, stronger muscles to control their new body; girls do not get this same rapid growth in muscle power.
Even though men and women are pretty different physiologically, from hormones to genes, we have one thing in common: we all get more muscular and stronger by hitting the weights. Males develop more muscle mass than females in absolute terms, but female muscle grows just as fast in relative terms.
Men age faster than woman — and by their 50s, male bodies are as much as four biological years older than females of the same age, a study published in “The Journals of Gerontology: Series A” found. The gap is apparently evident in younger men and already exists in men in their 20s.
Males lose collagen earlier and more consistently throughout life. Females tend to keep more until menopause, when they lose it at a dramatic rate. So while males slowly, gradually look older, females experience a more sudden, marked change in how old they look.
Key Takeaways. Across the world, it's a common assumption that women are more emotional than men. A new study found that women, whether regularly menstruating or taking hormonal birth control, have similar emotional patterns to men.
Research does find neurobiological differences in the experience of compassion. Women may at times have higher levels of oxytocin—sometimes called the “cuddle hormone” or “love hormone” because it is linked to bonding, social connection, and monogamy.
Sex differences in human intelligence have long been a topic of debate among researchers and scholars. It is now recognized that there are no significant sex differences in general intelligence, though particular subtypes of intelligence vary somewhat between sexes.
According to the findings of this study, females are more flexible than males. The stiffness of female muscles is less than that of males.
The X chromosome had more of the genes involved in immunity than does the Y chromosome. Catherine Greene, associate professor of clinical microbiology, said: "The phenomenon of female neonates being hardier than their male counterparts is well recognised.
Swimming
Of all swimming styles, breaststroke (or the popular "frog stroke") is considered the most demanding in terms of stretching and therefore the most effective for height gain.
Takeaway. You can't gain height by losing weight. But you can lose weight by living healthfully. This, in turn, might reduce your risk of losing height in later life due to obesity-linked conditions like osteoporosis.
If a child has no diagnosis or apparent difficulties, the “funny” or abnormal running pattern in children is usually a result of muscle imbalance which results in poor coordination. It is important not to brush off these red flags and they should always be addressed.
It's caused by brain differences that make them take longer to do things than other kids. This includes doing homework, having a conversation, and making decisions like what to eat for breakfast. Slow processing speed can happen on its own. But it often co-occurs with ADHD, dyslexia, and anxiety.