Hi stmml. Some people would suggest making small, reachable goals that gradually build up so you can get some movement.

Fresh cool air can stimulate your brain a bit, especially a cold toilet seat!

Laughter is something that can help, too. There are some humor threads here at PC, you could try reading some of those posts.

Anything like energy drinks only help for a short time and they could interfere with your sleep.

People have found music therapy helps, just depends on what type would help you focus on the task on hand(bagpipe music?, military march music, throat(ululating) music?)