Roy M. Wallack

Beware the Black Hole

Are your workouts working against you? Why one addictive kind of training might be sabotaging your game.

Find Your No Zone

The black hole is a narrow no-go range, a span of about seven to ten heartbeats per minute. Here's how to figure out where it is for you.

Don't Be a Middle Man

Easy days should feel nothing like your hard days. Here's how to do each one right.

Hydro Power

Explosiveness is key to every sport. Tap your inner dynamite with this revolutionary water workout.