60-Minute Workout That Has It All! Cardio, Strength, and Flexibility

If you want to torch calories and tone your tush, running is one of the most effective forms of exercise. The problem is, it leaves your upper body and core high and dry, and if you forget to stretch, you're left with tight, tense muscles that could suffer an injury that keeps you from lacing up your sneaks. Here's a 60-minute running workout that includes one-minute strength-training intervals as well as a short stretching session at the end. Source: Thinkstock The Workout 0:00-5:00 - Warmup - ...