I am fifty, and I've been training seriously for over 35 years... I've tried just about everything over the years, and various stimulants have certainly provided me with the "boost" I wanted in the moment - thermogenics are all essentially the same, and they are all, in my opinion, fairly harmful over the long haul... Having a strong dose of caffein periodically seems fairly harmless, and good coffee can be a real pleasure and even medicinal in certain respects... Still, nothing beats good, old fashioned self-care in the form of good rest, real food, and, most importantly, a peaceful spirit... Take care...good luck.
A change maybe on the wayMore later