Not everyone has the resources to really jumpstart their training by working out at the top of Mount Everest, but the Elevation Training Mask is the next best thing. The mask simulates altitude training by restricting your oxygen intake, which increases lung capacity as the lungs have to work nine times harder to take in oxygen. The mask can safely be used during running, cycling (stationary to start), and other aerobic workouts.

Other benefits include increased anaerobic thresholds, mental and physical stamina, focus, and energy production. Plus, you’ll resemble that bad-ass character from Killzone 3. Can’t go wrong there.