5) Exercise to strengthen your mind (and body) “Exercise elevates dopamine, a neurotransmitter that regulates our mood, emotions, and energy levels,” says Graham. “Decreased dopamine has been linked to psychosis, schizophrenia, and ADD. Serotonin is also released through exercise, and this neurotransmitter controls mood, socialization skills, memory, digestion, sleep, and sexual desire. Decreased serotonin can…