7 Exercises You Don’t Have to Do Anymore

Knee Injury

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6. The Seated Knee Extension

or leg extension. This is the one where you sit on a bench and put the weight in front of your leg and extend the lower half of your leg, only from the knee down, straight out at a 90 degree angle. This isn’t a bad exercise so much as a waste of time. Like many of the weight machines at the gym, this exercises only one muscle group.

Find also how to prevent sport injuries.

You can get the same benefits, plus work additional muscles at the same time, by doing squats and holding dumbbells.

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