pre workout

>>36541117
Pre workouts contains caffein. The thing that differentiate straight caffein and most pre's, are BCAA's.

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>>36541117
"tricks" isn't really the word. More like prevents you from feeling tired

Mind over matter.

If your brain isn't tired, are you really tired?

Caffeine has a stimulating effect on your CNS, it's not like the only thing caffeine does is blocking receptors in your brain so you don't feel tired. There has been alot of studies on the positive effects on caffeine during both cardio and wheight lifting and yes it helps.

>>36541117
Caffeine also increases epinephrine response and helps spare glucose during exercise to a slight degree. It sets the brain into a fight or flight response which can heighten perception, coordination, etc.

>>36541117

Because caffeine also stimulates adrenaline release.