As the days get warmer I find it hard to stay cool while exercising outdoors, even in the mornings that are nice and cool in the spring/fall. It’s important to not push it too hard in the heat, which can easily lead to headaches or worse; shortening your workout!
But seriously, heat is no joke when one doesn’t take the proper precautions to deal with it before, during, and after their work outs. I make sure to drink lots of water, try to run in the shade, and do cardio indoors if the temp is too high. Swimming is also a fun option, but not always practical.