I always perform better in the AM, but I manage a hedge fund so I am typically trading from 4am until 10pm. I find it very difficult to remove myself from my daily work-prep to make it to the gym in the morning; far more relaxed and focused at night. I'm pretty spent by 8pm, so a large dose of ALCAR usually offers enough of a jolt to get me through a 90min w/o. I eat pretty balanced at night, but it's the lowest cal meal of my day. I do my LI-cardio in the morning on an empty tank; quick market/fx check and off to the stairs.