You need good leg and hip alignment for posture and effective workout technique. Learn the position used in Pilates, with an exercise to achieve it.
Proper Body Alignment - Bone Health & Osteoporosis Foundation
Basic Leg and Hip Alignment for Posture and Exercise
Exercises and tips to improve your posture
Marguerite Ogle MS, RYT - Verywell Fit
12 Best Hip Flexor Stretches to Reduce Back and Hip Pain
Basic Leg and Hip Alignment for Posture and Exercise
Injury Prevention and Body Mechanics - Physiopedia
Marguerite Ogle MS, RYT - Verywell Fit
Posture: What It Is & Why It Matters for Your Health
How to Fix Rotated Pelvis With Clinical Somatics Exercises