I'm 300 lb and I do 30 to 45 min in the sauna. 30 to 45 min. Elyptical level 12 or bike . Then train for up to 1.5hr. Every day! My preworkout is food and a protein drink, post protein drink and food! Here is a great idea. Quit all energy type suplements, drinks, shots and eat more food. Promise u will get more energy from food than u will from some crap in a can. I've workedout with guys from work and they use preworkouts every time and always wonder why they can't keep up.;-)
Id also quit all soda while your at it. Water, milk, juice. In that order!