This 3-Move Workout For a Stronger Body Only Takes 15 Minutes

Push-ups are a full-body affair, making them one of our favorite exercises. If you find yourself motivated to master push-ups after this workout, you need to start our 30-Day 100 Push-Up Challenge.

Trainer tip: "Push-ups have survived just about every fitness fad there is — rest assured you're in good hands with this move," said Konforti. "Push-ups can also be modified by placing the knees on the ground or by elevating the hands to a couch or wall."

How to do a push-up.