A personal trainer outlines his best seven-day core strength challenge for a flatter stomach and tighter midsection.

A trainer explains how to perform his 30-day power walking dumbbell workout to melt love handles and build a stronger body.

A trainer explains how to perform his 30-day power walking dumbbell workout to melt love handles and build a stronger body.

A personal trainer outlines how to perform his ultimate dumbbell floor workout to lose belly fat and strengthen your core.

Stability ball exercises create an added challenge by requiring your body to engage stabilizer muscles ... Lower back down in ...