Can I add days for CORE workout?
Hey, 28 Male, 80kg, 178cm. I'm not a beginner, but I do low weights at 12 reps and I focus on stretching while doing the reps (full range, slow, and focus). So I'm training 3x per week, this program: https://www.muscleandstrength.com/workouts/total-package-workout My days: Sunday/Tuesday/Friday Can I add in…