I find I can do best in lightweight cloth masks like the 3 ply ones at Old Navy, with a mask brace underneath it to hold it off the face some, a stick-on metal nosepiece so it doesn't leak/fog glasses (they come in packs of 100 on Amazon for cheap), and avoid strenuous activity while wearing it, I usually only wear it inside and 6 foot distance both in and outside, AND if its for long periods, I found these fan necklaces that are quiet but blow air up on you to help reduce the heat/humidity...