Box jumps: Pick a stable surface that you can jump onto and land safely (use a step, bench in the gym, low wall outside, etc). Start in a squat and jump from both feet to land on both feet in a squat ...

THE BENCH PRESSES, cable crossover machines, and dumbbell pullovers of the world are all great for building up your chest.

Relatively simple but effective exercises are often particularly popular. Step-ups definitely fall into this category, ...

Step aerobics is a classic cardio workout. It has lasted for decades for a simple reason: it delivers results. The "step" is a 4-inch to 12-inch raised platform. You step up, around, and down from the ...