Some like it hot—and some like it cryogenically frozen! Athletes have been using temperature in their training for centuries but the debate over warm vs cool has never been hotter in the fitness community. With scientific advancements in hyperthermic and cold conditioning—from infrared saunas to high-tech cryo-chambers—athletes have more options than ever before to give themselves an edge in their physical results. But which method boasts the best recovery techniques for quicker turnaround times and overall better performance? Is it advantageous to train in the summer’s scorching sun or in the dead of winter? Know all the facts before you start playing with fire.