Worthwhile aerobic activities must involve the use of groups and must be rhythmic. A) Large muscle

B) Small muscle

C) Time friendly

D) None of the above.

The most common stereotypes could be that boys don't cryboys don't get emotional boys are never as mature as girlsboys are lazyetc.

They need to contract and relax

One health risk and the most important one is obesity, it can cause obesity since you are not leveling your food like you wont ever get full because your just snacking between foods which can also cause diabetes.hope this : )