Exercise boosts the production of Interleukin 15 in skeletal muscles, which travels to skin cells and ramps up mitochondrial function to rejuvenate them.

While both aerobic and resistance training improve skin elasticity, a new study found that only resistance training boosted the thickness of the skin's middle layer.

Resistance training boosts skin thickness by reducing certain blood chemicals that suppress byglycan, a molecule critical for regulating collagen formation and dermal thickness.

Aerobic exercise boosts certain factors in the blood that resistance training doesn't, such as Interleukin 15, providing its own unique contribution to skin health.

The smartest approach for skin health is to combine both aerobic and resistance training because different forms of exercise produce different, beneficial results for the skin.

People who are habitually active with high-intensity aerobic exercise have a thinner outer layer of skin, which indicates healthier and more youthful cell turnover.