If you want to feel motivated and improve your focus and attention, start your day with a

Well SupportedVigorous exercise stimulates lactate production in muscles, which travels to the brain and triggers the production of neurotransmitters like serotonin and norepinephrine.

Well SupportedIncreased free-floating tryptophan readily enters the brain and promotes serotonin production when unopposed by other large neutral amino acids.

Well SupportedExercise increases tryptophan's entry into the brain by alleviating competition with branched-chain amino acids, thereby increasing serotonin production.

Partially SupportedStarting the day with a 10-20 minute high-intensity interval training (HIIT) workout can improve motivation, focus, and attention.