Help what?

Can't help you; Good concerts are such overwhelming amounts of energy, that introverts like us "broken" for a couple hours, becoming temporary extroverts. (Some introverts will remain introverts however. Handle with care, and give them space when they ask it)

The crash afterwards can be brutal, hydrate yourself. Have some salty foods, and eat a banana (Need to replenish some lost potassium), etc. Your muscles are probably hating you for the sudden, and unannounced thrashing to made, but fuck your muscles. You had fun.