Why most training apps fail at concurrent training, and how Platyplus solves it using pure sports science.
If you use TrainerRoad for cycling, it doesn't care that you ran 10k yesterday. If you use Fitbod for lifting, it doesn't know you have a Threshold interval session tomorrow. This lack of communication leads to overtraining, injury, and stalled progress.
Platyplus introduces the Combination Matrix: an intelligent engine that understands how different sports interact and tax your central nervous system (CNS).
Built on the principles of Joe Friel. Platyplus manages your Chronic Training Load (CTL) and ensures your cycling intensity is periodized correctly, never scheduling VO2 Max on heavy fatigue days.
Governed by Jack Daniels' VDOT formulas. The engine understands the high mechanical load of running and will automatically downgrade a run to a Zone 2 cycle if your joints need recovery.
Following Mike Boyle's functional strength approach. Heavy squats are pulled *away* from your key threshold cycling days so you never enter a race-simulation with dead legs.
Every night, Platyplus reads your exact Training Stress Balance (TSB). It knows exactly how much fatigue you accumulated yesterday.
You wake up and input your Sleep Quality, HRV, and Muscle Soreness. The engine checks this against your scheduled plan.
If you are supposed to do heavy Deadlifts but you reported lower back tightness, the Matrix steps in. It downgrades the gym session to core mobility, and protects tomorrow's cycling threshold session.
The revised, perfectly balanced workout is pushed back to Intervals.icu and your Garmin/Wahoo head unit. No guessing.
Platyplus is the only engine with built-in constraints for female physiology, based on the research of Stacy Sims (ROAR). The engine dynamically adjusts intensity blocks around menstrual phases and specifically clamps heart rates and rep-ranges into support bands for pregnant athletes. It's built for safety first.