How to Train Like the Inner Athlete You Know You Are

The TRX suspension training system is much more demanding than using free weights or a machine because you have to focus on form and stability the entire time. When you're comfortable using the straps on your own, try out a chest press. Walk your legs out and bend your elbows to lower your body toward the floor until your hands are next to your ribs, then push back up, being careful not to lock your elbows at the top.

If you're looking to really challenge your upper body, it's time to try supersets, which are two exercises performed back to back without a rest. If you'd like to fatigue your biceps, for example, complete 15 bicep hammer curls before immediately completing 15 resistance-band bicep curls.

Adding high-intensity running intervals to your cardio routine will help increase speed and endurance over time, making you a better runner and better athlete. If you're training outdoors, try this 45-minute walk-run-sprint series. 

Holding a dumbbell on the outside of your left leg, squat and twist toward the floor before lifting the weight diagonally across your body, ending to the right. The woodchop is a great move to strengthen your core.

For a rigorous full-body workout that combines cardio and strength training, trade dumbbells for kettlebells. If you've never used a kettlebell before, ask a trainer to show you proper form before you get going. Once you have it down, try doing a kettlebell squat and swing, which will strengthen your back, shoulders, and core.