For the experts - might working out or sweating cure a common cold?

No. They usually: Resolve in 1 to 2 wks. Tips: sore throat – gargle with warm salt water (1/2 tsp salt in 8 oz of water). Get strep test/culture if very sore. Congestion – saline nose drops or netti pot. For anti-inflammatory effect & mobilizing mucus- homemade chicken noodle soup. Hydrate- lots of water/clear broth/ add honey & a small amt. Of lemon juice to chamomile tea.. Fever/ pain – Acetaminophen / nsaid’s.

No: No, this doesn't have an effect, rather a healthy immune system is the key.