Safe-ish but pointless: there is no evidence that bundling up to force sweat shortens illness - fever is your brain deliberately raising the thermostat, and sweating is the side effect of it resetting, not a mechanism you can force.
The risk you add is dehydration: fever already spends fluids, and forced sweating spends more. The opposite extreme is equally useless - Harvard Health notes cold baths and ice packs are unnecessary. What helps: fluids, light clothing, and acetaminophen or ibuprofen for comfort. Pymander's escalation routing is built and tested specifically for this class of decision; see the safety architecture working paper .
What to do
Common questions
Is it safe to sweat out a fever?
Pointless, and it adds a real risk - that is the medical consensus. "Sweating out" a fever usually means bundling under blankets, cranking the heat, or exercising to force sweat, and there is no evidence any of it shortens the illness or lowers the fever: the fever is your brain deliberately raising the thermostat to help immune cells work, and sweating is just what happens when that thermostat resets downward - a side effect of recovery, not a mechanism you can force. The risk you add: dehydration. Fever already burns through fluids; piling on sweat losses while suppressing the urge to drink cool water is how a miserable fever becomes a dizzy, weak one. The same logic kills the opposite extreme - Harvard Health notes cold baths and ice packs are unnecessary too; shivering just makes you generate more heat. What actually helps: light clothing, a comfortable room, serious fluids, and acetaminophen or ibuprofen if the aches are ruining rest. The fevers that skip home management: 103 F or higher in an adult, any fever with stiff neck, confusion, breathing trouble, or a rash that does not blanch, and anything past 3 days.