I love gardening but i can only be outside for 20 min at a time & I have to come back in and cool down. I get weak & dizzy in high heat. I can handle up to 80° if its not too humid. I perspire nearly constantly. I carry hand towels with me to wipe my face. I often use the cooling bead bags for the back of my neck & I run cold water over my inside wrists to help cool down my core. Although the heat is bothersome, I suffer more in cold weather. I live in WI but I've started spending winters in southern FL. Its not too warm or humid in winter down there.