I just started to use the GNC Total Lean Burn 60 supplement in conjunction with the CLA (regular one). I notice a boost in my energy when I take the Burn 60 right before working out and I do feel I can go longer though a work out. Is the CLA supplement really necessary and does it actually help when used alongside the Burn…
I have a quick question. I calculated my target heart rate for weight loss to be between 165-170 bpm. Lets say I stay in that range for 20 minutes, how many calories would that burn?:smile: