Grade: 1
"Popped" whilst running in Piranhas with backpack. Immediately sore, kept running for ~20 mins. Don't think its serious, but don't wanna make it worse.
Technique - its a W.I.P.
Pelvis/Ribs relationship - focus on ab/oblique engagement. Will help glutes activate, because they have something to pull against.
Over-extending during drive phase – lift foot earlier, beneath my body. Benefits = avoid overloading calf; shortens lever, exchange contact-time for air-time