Nutrition
Indoor Trainer Sweat Loss
Indoor trainer sweat loss often beats outdoor rates because still air traps heat—fans help but bottle volume still needs a weigh-in test.
Indoor trainer sweat loss often exceeds outdoor expectations because still air and no wind chill trap heat—fans help but rarely eliminate high sweat rates on threshold sessions. Weigh one representative indoor workout to set bottle volume; many cyclists need 750 to 1,000 ml per hour on hard erg efforts.
Towel weight is a rough backup if scale access is awkward mid-session. Pair fluids with sodium on efforts over sixty minutes.
Common questions
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Are fans enough to prevent dehydration indoors?
Fans reduce heat stress but most hard indoor sets still need structured drinking—test your sweat rate once and plan bottles.
Related terms
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