No, not crunches — build a strong core using just 5 moves and a dumbbell
Mat exercises like crunches target important core muscles that protect the lower back, stabilize the hips and support posture ...
You don't need squats or lunges — I tried this 30-minute standing HIIT workout, and here's what happened to my body
Edwards packs 4 rounds of 10 exercises into this 30-minute HIIT-style workout, with brief “active break” periods between each round. All of the exercises take 30 seconds followed by 10 seconds of rest ...