Dangerous “recreational doping” – that’s why you should never take painkillers before exercising. Ibuprofen leads to kidney failure, acetylsalicylic acid to heart attacks.
The German Pain Society estimates that far more recreational athletes than previously assumed regularly use ibuproen and the like. The result: Under the influence of painkillers, you overload your joints and muscles because you can no longer feel the pain as well. Recreational athletes are better off staying away from painkiller before training.