Top 10: Exercises For Guys Over 40

http://www.youtube.com/watch?v=KaARD5KdSqQendofvid
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No.4 - Back leg raised split-squat
This exercise is the king of lower-body training. Because it’s a single-leg exercise, it won’t be loaded as heavy as a two-leg exercise such as a traditional squat. Lower loading to the spine can help preserve back health in the long run. However, people almost always perform this exercise more on one leg than half of their back squat max. In other words, if someone could back squat 400 pounds for one rep, they can back leg raised split-squat 200 pounds for more than one rep. The result is a greater load to the legs, without the deleterious effects of excessive spinal loading.

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