Are pre-workout supplements unhealthy?

While I don’t believe the individual ingredients in the common pre-workout supplements are unhealthy (like niacin, taurine, beta-alanine, arginine, yohimbe, creatine, caffeine etc) – the reality is that most of the pre-workout supplements out there contain a smorgasbord of vasodilators and CNS stimulants, in unknown amounts (unless actually tested) – which can be detrimental...