Somebody Worked Out

Puberty hit these kids nicely! We surmise that even when they were young, these lads had always wanted to be fit so they made it a point to work on their bodies while growing up. We can tell that the eldest in green shorts motivated his siblings to achieve better versions of themselves.

If these were women, the case wouldn’t be the same. According to Livestrong, several studies have found that guys do have more muscle mass than their counterparts. Still, experts advise undergoing strength training for all muscle groups every week for everyone. Plus, they also instructed clients to practice routines that are customized.