run
u use your upper leg muscles.
No.
When You use A set of muscles,The blood flows to them so you can exersice longer.
so they can still run, and catch prey
Exercise and strengthen leg muscles and cardiovascular system.
They Are Fast Because They Run A Lot And Their Leg Muscles Get Stronger.
you can build your leg muscles multiple ways but the best way is doing squats. You can also run and that builds leg muscle and helps your cardio.
yes in the long run they build leg muscles and then you can get faster
no, a penguin does not have strong enough leg muscles as humans do.
The hamstrings are comprised of three muscles on the back of the leg that run from the bottom rear of the pelvis to alongside the knee.
sciatic nerve