You lost a lot of weight!

Start slow! Do 5 crunches if that’s all it takes to few a burn. Catch your breath and do 2-5 more and then rest. Do stoplight runs and only run when you can. Rest/walk as needed.

The point is incremental increases in activity, you’ll get there so don’t rush and give yourself grace.

You can’t hit the ground ready to run a mile if you’re not used to running.