Not been highly studied; but the casual results (copied because “the pros do it”) are something like this:
Lifting has a mental component; focusing on the muscles and joints needed (often called recruitment) and a physical component….muscle strength, breathing, stability, cardiovascular
Smelling salts help to trigger a flight or fight response; increasing breathing and heart rate; chemicals for alertness are released to the brain….similar effects to adrenaline being released
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