MANGAN: Weightlifting will extend your lifespan.

Weightlifting has a powerful anti-aging effect. Resistance exercise reverses aging in skeletal muscle; it literally made the gene expression profile in the muscles of older people into one more like those seen in young people. . . .

One way in which weightlifting increases the size and strength of muscle is by lowering the level of myostatin. Less myostatin means bigger and stronger muscles.

A new study shows that, in mice, less myostatin also means about 15% longer life.