Jenner’s workout philosophy transformed over her career. Early in her modeling tenure, under celebrity trainers like Gunnar Peterson, her training featured aggressive barbell complexes, tire flips, and high-volume plyometrics designed to burn energy quickly. As her runway presence solidified, the impact of heavy lifting threatened to thicken muscular groups around the waist and trapezius.
Today, her foundation centers on private reformer Pilates, working regularly alongside celebrity trainer Liana Levi at Forma Pilates in West Hollywood. Reformer springs supply eccentric tension that stretches muscle fibers under load, developing density without hypertrophy.
Her conditioning breaks down into three distinct weekly elements:
- Reformer Carriage Sequences: High-resistance leg presses, carriage planks, and pike variations targeting the transverse abdominis and inner adductors.
- The 11-Minute Floor Core Circuit: A bodyweight plank routine Jenner uses while traveling. It strings together forearm planks, side planks with hip dips, bird-dogs, and hollow-body holds without resting between sets.
- Equestrian Jumping: A competitive horse rider since childhood, Jenner rides multiple times a week. English-style equestrian riding forces severe isometric engagement of the pelvic floor, calves, and lower lumbar region, creating rare functional core stability.
Cardiovascular work is kept minimal and purposeful. Jenner avoids excessive steady-state treadmill running, which can trigger catabolic muscle loss and joint inflammation in tall frames. Instead, she utilizes low-incline walking and short, explosive sprints on non-consecutive days.
