Taking a specific green tea extract every day for four weeks helps your body burn more fat while you exercise—without making you burn more total calories—so your body uses fat as fuel more efficiently.

Taking a specific green tea extract pill every day for a month helped young guys who exercise casually lose a little body fat—without losing any overall weight—while those taking a fake pill didn’t.

Taking a daily decaffeinated green tea pill for four weeks might make working out feel easier for guys who exercise casually, so they don’t feel as tired or strained during their workouts.

Taking a special supplement made from decaf green tea, quercetin, and alpha-lipoic acid for 8 weeks helped overweight people who exercise casually burn 45% more fat during workouts and let them exercise harder before their bodies stopped burning fat efficiently.

Taking a daily decaffeinated green tea supplement for four weeks may help your body burn more fat and less sugar during workouts, making your exercise feel more efficient.

Taking a special supplement made from decaf green tea, quercetin, and alpha-lipoic acid for 8 weeks helped overweight people who exercise casually burn more fat during their workouts—like their bodies switched from burning sugar to burning fat more efficiently.