Cataract surgery is one of the oldest surgical procedures known, first documented in the fifth century BC. [12] In ancient times, cataracts were treated with a technique called couching ...

Brace your core and lift yourself up into a shallow bridge position. Slowly roll up and down between your lower neck and mid-back, stopping at tight areas along the way. Repeat for 30 seconds.

You have to hold a stretch to get the benefit. Don't bounce in the stretch -- you'll tear your muscle. If you don't stretch before a workout, you'll hurt yourself. Well, they're all wrong. But ...