I’m a busy mom who often only has 30 minutes to exercise, so I need to make each workout count.

To make my sessions more challenging (and more interesting) I rely on four strength-training techniques:

A slower tempo : Slowing down increases the amount of time the muscles are under tension

Pulsing movements : These movements help fatigue the muscles

Angle switches : Switching the angle of an exercise can help isolate muscles

Dead stops : Coming to a complete stop between repetitions of an exercise eliminates momentum, forcing you to use explosive strength to restart the movement

You can try these techniques for yourself in the upper-body workout below, which strengthens your core, arms, chest and shoulders. You may like

A trainer says when all he has is a pair of dumbbells he us

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