Little amount of sugar can boost your brain . Like for exam , for interview , meeting , speech etc in this situation it is great but only for short time .
Same for coffee.
Avoid light in bedroom at night .
In morning take cold shower and let it hit your face and chest for at least 1 minutes. It sounds crazy and difficult in beginning but it works. I tried it.
Our brain can be 5 times better than now by just growing new cells and connection known as neurogenesis.
Drinking water keep hydrated the brain and exercise helps in neurogenesis.
You are what you eat , we all know that . And fun environment is obvious necessary for healthy brain. If you observe you'll notice that our productivity increases in fun environment.
Hope this will help you. To go deep in this topic goto kwikbrain.com
Thank you.