l carnitine is it the same as l lysine L-Lysine, Double Strength 1000 mg Tablets Item - L-carnitine biosynthesis. -
Description
Eur Heart J 1992;13:251-5
CPT1A , carnitine palmitoyltransferase 1A

The reason is your metabolism
doi:10.1038/s41430-018-0382-9

Transparent Labs Lean Pre-Workout Product Description Training hard while trying to shed body fat creates a problem: you need energy to perform, but you're eating less fuel
