Real Athletes.
Real Numbers.

Athlete began the program March 12, 2014. A 5'10", 205lb sophomore linebacker coming back from right shoulder labrum surgery (injured bench pressing at a previous facility), with three years of "no pain, no gain" powerlifting-style training behind him. Assessment showed tight hip flexors, calves, quads, and IT bands; shoulder / lat / pec mobility restrictions; and visible soft-tissue issues through the upper body. Biomechanical film showed no shin fold on the first steps, hip internal rotation during knee drive, no paw-back, heel strike in front of the hips, full triple extension behind the body, and a heavy / lethargic run for his strength level. Baselines that day: 10-yard sprint 2.06s, broad jump 6'5", vertical jump 17".

Started on Dr. Yessis's 1x20 protocol with 14 exercises per session at a light load — a hard adjustment for an athlete used to 3–5 sets of max-effort work. No jumps, med-ball throws, or sprints for the first 8 workouts. Active cords (hip abduction / adduction / knee drive / paw-back), Dr. Yessis GHR, full-ROM back raises, and bent-knee and standing calf raises built the base; upper body stayed light to protect the post-surgical shoulder. Frequency progressed from 2x/week (workouts 1–8) to 3x/week. Off-day aerobic base: 1-mile timed runs on Tuesday / Thursday / Saturday — no gassers, no ladders, no direct speed work until mechanics were ready. Slow-motion video on both side and front views drove every cue.

Athlete returning from a partial ACL reconstruction 7 months prior. Cleared by surgeon for running but had visible compensation on the surgical side, poor deceleration mechanics, and a fear pattern on cutting drills.

8-week reconditioning block integrating deceleration drills, single-leg strength progression (single-leg RDL → skater squat → landing mechanics), and constraints-led cutting work where we manipulated field size rather than cueing technique.

Young athlete "behind" peers in coordination and body awareness — late to sport-specific academies, struggling with rhythm and timing in team drills.

12-week youth development block focused on physical literacy — animal flow patterns, locomotion variety (skipping, galloping, hopping, lateral), and perception-action games rather than sport-specific skill work.

Long-standing lower back pain (8+ years), three failed rounds of physical therapy, no diagnosis beyond "non-specific mechanical LBP". Visible anterior pelvic tilt, poor hip hinge strategy, and a tendency to bear weight on heels.

Posturology assessment identified a vestibular asymmetry and a foot/eye coordination deficit driving the compensation pattern. 12-week program built around the posturology corrections and progressive loaded stretching (Kinstretch).

Top-100 nationally ranked player with a recurring right-ankle sprain pattern (3 episodes in 18 months) and visible deceleration issues on first-step direction changes.

Cutting mechanics block (4 weeks, 2x/week). Reorganized deceleration mechanics using a constraints-led approach — modified court size, scoring incentives that rewarded deceleration quality, and split-stance strength work.

Sophomore linebacker returning from right shoulder labrum repair. Three years of "no pain, no gain" training — limited hip hinge, poor deceleration mechanics, no paw-back in acceleration, and a tendency to land on his heels with each first step. Tight hip flexors, calves, quads, and IT bands; soft-tissue restrictions through the upper body that limited overhead and pressing tolerance.

12-week rebuild starting with hip mobility, soft-tissue work, and shoulder-specific corrective progressions. Reorganized the warm-up around joint-by-joint prep, then layered in acceleration mechanics — shin fold on the first steps, hip drive, and active paw-back — with low-volume sprint exposure and technical feedback on every rep. Loaded box squat variations and posterior-chain work rebuilt lower-body strength without aggravating the shoulder.

Two female athletes tracked across a ~10-week training block (February to April). Baseline testing on a standard indoor turf surface: Athlete A at 1.64s in the 10-yard and 4.40s in the 30-yard dash; Athlete B at 1.60s in the 10-yard and 4.18s in the 30-yard. Both were clean of injury but had room to improve acceleration mechanics and 30-yard carry.

Block built around acceleration mechanics (posture at start, shin fold on first steps, hip drive, paw-back) paired with consistent speed exposure 2x per week. Low total sprint volume per session with technical feedback on every rep — emphasizing quality of the first 10 meters and posture through the 30. Strength and posterior-chain work supported the on-field changes.