I don't drink coffee. I don't drink tea. I don't drink soda. I consume 0 caffeine and as a student I get my energy from good sleep. However, I've realized that more sleep does not necessarily mean I wake up refreshed. I've self observed with myself that if one day I sleep 7 hours or 8 or 5 and feel well rested and then I try to repeat that, I don't produce the same results. This is an excellent product that addresses this sleep issue and your comments are really not justified.