Targets: Core muscles, triceps, and chest How to: This is what most personal trainers consider to be the “perfect” exercise, because when done correctly, it works so many muscle groups, and because it uses your own body weight as resistance. The trickiest part of doing a push-up is maintaining a straight body line during the entire exercise. To execute a perfect push-up, also make sure your chest doesn’t actually touch the ground — you should lower yourself about two inches from the ground and then come back up.

Targets: Abs and core How to: Stand with your feel slightly apart, with your arms outstretched at your sides, like an “airplane.” While raising your right leg straight out (don’t bend your knee!), stretch your arms out together in front of you, and round your back like a cat. Inhale, then return to your original position. Alternate to the left leg, and repeat for twenty repetitions. According to WebMD, when you’re in the back-arch position, you ought to feel like your navel is pressing back on your spine. It doesn’t really feel that way to me, but then again, I’m just focused on finishing my set! These are hard! This set of exercises won’t take long to do, and is also a fantastic cardio workout! Be sure to pause for fifteen seconds between sets, and keep hydrated! You’ll see results quickly, within two weeks, but be prepared to be a bit sore after the first few days. Do you have an exercise you think is perfect? What muscle groups does it target? Please let me know! Top Photo Credit: Method Fitness