Does not burn fat
Fast‑twitch
The strength muscle
When you swing a golf club, lift a weight, throw a ball or sprint, you recruit fast‑twitch fibers. They contract quickly, providing the short bursts of energy needed for explosive movement. Their primary fuel is blood sugar stored in the muscle cells, the blood and the liver, and it is depleted quickly, which is why a sprinter must rest after 50 to 100 yards. A fast‑twitch fiber gives out after 30 to 60 seconds of continuous contraction. This is not the fiber to call on to lose fat.