If you yelled for 8 years, 5 months and 6 days you would have
produced enough sound energy to heat one cup of coffee

(but you'd be drinking alone)

If you fart consistently for 6 years and 9 months, enough gas is
produced to create the energy of an atomic bomb

(only victims would be anosmiacs within 20 miles)

Banging your head against a wall uses 150 calories an hour

(lose weight driving to work, put that steering wheel to good use)