tight and weak
Issue 28: Sore back? Strengthen your core!
If you work at a desk, your back is probably tight or sore. Strengthening up your core can help with that, but it takes more than just crunches!
tight and weak
If you work at a desk, your back is probably tight or sore. Strengthening up your core can help with that, but it takes more than just crunches!
video
What’s actually going on with your muscles when you sit for 8 hours? I’m going to guess that the first area that comes to mind when you read that is your neck and shoulders.