Word. I got hit by a car while biking 7 years ago and had all sorts of back problems afterwards. It wasn't like a sharp pain, but my back was always very tense

Word. I got hit by a car while biking 7 years ago and had all sorts of back problems afterwards. It wasn't like a sharp pain, but my back was always very tense and ache-y. What has really helped me is doing handstand-pushups. You do a handstand against a wall, and then do a push up, lowering your head towards the floor. It really engages all the muscles in the shoulders/back. You'll probably start off by just doing a handstand and then go from there slowly. Once you are a bit more confident you can also arch your back away from the wall engaging muscles lower in your back. Just like with any exercise, don't push yourself too much and make sure to keep proper form.