[atchoo]

That's basically the UK and I haven't experienced a problem with indoor air drying. I would give some basic guidelines though. It's the sort of things that you don't think you need to tell people until you see what they do...

- ideally machine washed with a significant spin to remove water. Air drying hand washed items that are sopping wet is a lot harder - might take 4x longer

- hang in a room with decent ventilation and some active air flow. Trying to air dry in the equivalent of a cupboard would be doomed

- hang fully spread out with decent space between the clothes. Drying time will be significantly extended if densely scrunched together with pieces touching. Buy multiple racks to get enough hanging space.

- don't put used wet gym clothes in a laundry bin to fester. If you aren't washing them immediately, hang them up to dry first and put them in the bin later