Pro climber and Arc'teryx athlete, Jonathan (aka J-Star) is one of the most technical climbers in the world. With over 500 5.14 climbs and nearly 30 5.15s under his belt, he's on the cutting edge of what can be climbed.

Jonathan attributes his super technician status to his scientific training, although his father, Bob, climbs 5.13, so it might just be the zeitgeist of the Siegrists.

Climbing Performance & Nutrition Program.

During his three-month program, Jonathan partners with nutritionist Shaina Savoy to share all he's learned from projecting and training to mental game and fueling to help you reach your performance goals.