Should you prepare for energy or endurance?
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Who lives longer and more healthy: those that spend hours on the bike or treadmill or those that exert themselves lifting heavy weights? Science is aware of some great benefits of each side.
https://www.faz.net/aktuell/feuilleton/debatten/sport-wann-krafttraining-mehr-bringt-und-wann-ausdauertraining-accg-200613800.html