I have very tight shoulders. I can do push‑ups but I feel like my body won’t let me use a full range of motion. The tightness is especially noticeable at the bottom of the push‑up. Should I pause push‑ups and focus on improving shoulder mobility first, or should I keep doing push‑ups (modified push-ups?) while working on mobility at the same time? My concern is whether doing push‑ups with limited shoulder mobility could actually make my shoulder/neck stiffness worse.