15 Minute Sand Timer

Research consistently identifies 10–20 minutes as the optimal window for a sauna round — long enough to trigger cardiovascular adaptation, heat shock protein production, and growth hormone release, short enough to cycle multiple rounds safely. Fifteen minutes sits right in the sweet spot.

Most protocols recommend 2–4 rounds with a 5–10 minute cool-down between each. Listen to your body — exit if you feel dizzy or overly uncomfortable before the timer runs out.

Absolutely. The wood frame and sand mechanism work in any environment. It's just most at home in the sauna.

No. Just mount it and flip it. If the sand flow slows over time, ensure it is stored upright and away from moisture when not in use.