Because I have MS, heat is mostly my enemy - isn't that funny? However, I use all my effort to track down things that help me cool! I have found sheets that cool me immediately, so I can have them on my bed. For the first time I found a light blanket that I can use, also. It is so amazing to feel the weight from the blanket on my body! I haven't had that in years!
Also I think I will sew on weights to the sheet in summer!