This no-equipment-needed routine from alignment and movement expert Pete Egoscue will allow you to strengthen your body anytime, anywhere. You’ll begin the 17-minute workout with squats and jumping jacks to get your heart rate up. From there, delve into some fun and playful moves that will tap your inner child and condition multiple muscle groups. Just before your body gives out to fatigue, squeeze in some challenging mountain climbers. End with a few relaxing postures to release tension and improve your body’s alignment. The key to this essential bodyweight workout is to do what you can, increasing your sets and reps as your fitness improves over time.