Tag: Brad Kolowich Jr.

Jonathan Kolowich is the kind of fitness trainer whose Instagram videos make you say, “Wait, whaaaaaat?” We’re talking about moves like Turkish get-ups with a heavy barbell or plyometric push-ups that jump from benches to the floor and back. These kinds of physical feats take practice, strength, and stamina, but Kolowich has to think about, monitor, and manage his blood sugar.

Athletes of all calibers have been doing altitude training for years, sometimes to prepare for high-elevation events but often just because they think it will lead to stronger endurance, better breathing technique, more efficient oxygen storage, and faster recovery. Here's what happened when I tried it before the Spartan Beast in Breckenridge, Colorado.