Swinging your arms to counterbalance the movement of your legs, yes.
when you work out
Lactic acid
No, frequency is about how often.
we are using our muscles
You can't. Large muscles take dedication and hard work, combined with eating and proper rest. Stick to it though and you can get muscles.
because they work out and they probably run every day
When you run, the muscles in your shins work hard to support your body and absorb the impact of each step. This can cause the muscles to tighten up, leading to discomfort or pain in your shins. Stretching before and after running, wearing proper footwear, and gradually increasing your running intensity can help prevent tightness in your shins.
by doing work hard like runing playing sports
No easy ones, just hard, time consuming, and boring, hard work.
Hard work will probably win out over talent in the long run. Coupling talent and hard work will usually result in an unbeatable combination.
Not really, If you ride in moutains It can be, But when you run acctualy, Your muscles work all the time plus it also trains your stamina, So for example if you get chased by gangsters you have to run on your knees. But if you really want to be good. You should run and bike everyday and it will keep you fit and strong.
Work a good honest day's hard physical labour.