Day 1 - First day after surgery: walk and abs

One month after changing my implants, I’m back. Not as I would like to, but at least I’m active again.
My doctor said that I’m only allowed to walk, do moderate abs exercises, and legs.
Today, was my first day. I went to the beach for a 30 minutes sand walk and 30 minutes abs session.
Walk on sand is more challenging than the treadmills, in 30 minutes, I went as far as 1.29 miles.
In 30 minutes of core exercises, I did not count how many reps I did. I repeated the moves until the muscle was fatigued, 10 seconds of rest.
I repeated the same exercise 3 times, and then a new move, until I reached 30 minutes.
It was a test, I was testing and challenging myself.
Overall I did good, since I could not use my arms.
Tomorrow will be leg’s day!