If you’re working out and not focusing on stabilizing and engaging your trunk… you will get hurt. This is so so important postpartum because your core is mush.. or worse- they sliced it open! Never stop focusing on core strength.
If you have crummy posture while working out, you’ll have crummy posture when standing at the grocery store or while picking up (and holding) a baby. You are training your body to strengthen in a harmful posture.