Our necks, shoulders, and backs suffer when we hunch over our keyboards and screens all day. If you’d like to correct your posture, these 30-second exercises could help.
More technical but I would recommend front squats as well. If you can travel up and down the entire range of motion while keeping your torso upright and spine neutral, it will be easier to remain upright when there ISN’T 50, 100, 200+ lbs riding on front of your shoulders. Try the “athletic” style grip rather than the “bodybuilder” grip once you are proficient.
Also important with the foam roller to not roll outside of your thoracic spine onto your lumbar or cervical spine. He’s being conservative by telling you “right under your shoulder blades”, but that’s a good cue for those who aren’t too aware of the anatomy.