Thank you for bringing this up Pete. I feel it's a potentially difficult to talk about drug use whether it's past or present because it's demonized in 'our' society to use illegal substances or indeed some legal substances/ prescription drugs for example Dexedrine( I guessing that's not made any more but I couldn't think of another one off the top of my head). Therefore it can make it difficult to talk about. There's no doubt that drugs both legal & illegal have had a profound effect on many 'Music Cultures'. an obvious example is LSD in the sixties, which I believe was legal up until 1964 (?) in the USA.... Mods in the sixties used some form of amphetamine( pep pills, purple hearts ,black bombers etc) at all night clubs. Northern grew out of the Mod culture. Northern Soul & Amphetamine go together like a hand in a glove. Speed gives you energy, focus & at times feelings of Euphoria. Ideal for Northern Soul. The potential problem is you cannot take 'Speed' every week for decades without a negative impact on your 'HEALTH'. Although there's always exception to the rule. Some of 'us' are just made of different stuff-'cast iron constitution/s ' For me personally if you don't have your HEALTH you don't have nothing. Without trying to sound patronising if you don't feel well your not going to want to go to an niter, dayer or Soul nite; even if you did go out it would be hard to enjoy it. Please Note in no way, shape or form I am telling people what they should or should not do. I agree a lot with others have stated that to put it crudely the aging process impacts on your energy & stamina. Something you need if you want to enjoy an niter without chemical assistance. Then there's the recovery period . Even without doing speed or whatever it takes a longer time to recover from an niter.