It strengthens the brain. Studies have found that working out can lessen the severity of memory problems in older adults, and even decrease the risk of diseases like Alzheimer's. It can also have a positive benefit on the brain function of younger people. Research out of New Zealand shows that exercise improves executive function -- the general brain processes that include planning, memory, reasoning, problem-solving and more.

Hop on the treadmill to look (and more importantly, feel) like a million bucks. On a very basic level, physical fitness can boost self-esteem and improve positive self-image. Regardless of weight, size, gender, or age, exercise can quickly elevate a person's perception of his or her attractiveness, that is, self-worth Longitudinal examination of the exercise and self-esteem model in middle-aged women. Elavsky S. Department of Kinesiology, Pennsylvania State University, University Park, PA, USA. Journal of Sport and Exercise Psychology. 2010 December;32(6):862-80. A longitudinal assessment of the links between physical activity and self-esteem in early adolescent non-Hispanic females. Schmalz DL, Deane GD, Birch LL, Davison KK. Journal of Adolescent Health. 2007 December;41(6):559-565.. How’s that for feeling the (self) love?
Bend your knees to lower down into a split squat. Your left knee should ideally form a 90-degree angle so that your thigh is parallel to the ground, and your right knee is hovering above the floor. (Quick position check: your left foot should be stepped out far enough that you can do this without letting your left knee go past your left toes—if you can't, hop your left foot out a bit farther away from the bench.)
Back to the tricep pushups and really activating those tricep muscles for toned arms.  If you need a rest, that's totally cool. Just take a break in the up position and maintain that plank form. This way you are still working your arm muscles just by holding your body weight up. So that's totally fine for some of our beginners out there. For those who are more advanced, we want you going as hard as you can and trying to hit that 15 to 20 reps. You're doing great.