Caffeine - increases energy - more calories burned in training, more strength used.

Yohimbine increases the body's thermogenesis, adds a kick, can improve libido (called the divine grail)
"Healthy Burner" is not doping.

It helps to burn difficult places in the body. If we have a deficit .

Lower abdomen, sides, thighs, buttocks.

Doses: Start with 5mg and see how you react, some and gradually increase every week/two to max 15/20mg.

Caffeine from 200-600mg depending on your needs and reactions.

Usually my pre-workout stack looks like 200mg caffeine + 10mg yohimbine.

Gives extra effects, you want more