I walk at 2.0 mph. This is about as fast as I can walk without becoming too overheated, but even then I need to wear light clothing and have a fan blowing on me

I walk at 2.0 mph. This is about as fast as I can walk without becoming too overheated, but even then I need to wear light clothing and have a fan blowing on me. Walking at 1.5 mph would probably reduce my need for cooling, and 1.0 or less just feels too slow for me.