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00:00This injection won't make you feel hungry anymore.
00:03The weight drops, but here's the catch.
00:0640% of that could be muscle.
00:08Inside your gut, there are tiny sensors called L-cells.
00:11When you eat, they send a hormone called GLP-1 to your brain.
00:14It basically says you're full, stop eating.
00:17Scientists thought, what if we gave people extra GLP-1?
00:22Turns out, hunger went way down and blood sugar levels remained stable.
00:26But when people lost weight, a big chunk was muscle, not just fat.
00:29And when they stopped taking it, they gained 70% of the weight,
00:33but mostly as fat, not muscle.
00:35So if you're on it, lift weights and eat more protein.
00:37Because losing weight is cool, but losing strength, not so much.