My brain has been turned to MUSH

I have quite the brain-ache from attempting to understand cellular respiration, fermentation, and cellular communication so needless to say I want to hurl myself off a cliff and also online window-shop/pin things to Pinterest until I fall asleep. I'm going to try to do some small exercise things before I go to sleep since MY ENTIRE DAY WAS CONSUMED BY SCHOOLWORK and I couldn't work out at all.