We recommend sauna use AFTER a workout as it will provide superior benefits compared to BEFORE training. In fact there are currently more scientific studies available for POST-WORKOUT sauna sessions effects on health and performance than for PRE-WORKOUT. However both methods have shown to have positive effects on health. For more information on that make sure to read our article here : https://www.quora.com/Is-the-use-of-a-sauna-better-before-or-after-a-workout/answer/Gabriel-Chabotino