How Summer Heat Doubles Your Iron Loss Through Sweat

Runners lose measurable iron through sweat every session, and summer heat doubles or triples those losses. Over a 12-week summer block, sweat-only losses can exceed 38 mg.

Runners lose measurable iron through sweat every session, and summer heat doubles or triples those losses. Over a 12-week summer block, sweat-only losses can exceed 38 mg.