I am not sure what does what in the energy function, some say exercise, some say drink more water…both work. But I always felt a deeper lack of energy in my body, like my mind could be racing but I would just feel sluggish and tired. To the point I am self diagnosed with chronic fatigue syndrome, my solution so far, is taking a protein supplement called Lysine, can be found at GNC, and Green tea, for its anti-oxidants, and I can honestly say I have never felt this good before. Maybe the Lysine pill I take is a placebo effect, but believing something healthy, can actually do something good, is never a bad thing. Hope your trials work.