After surgery, you will be very sore and it will be hard for you to lift items. I remember trying to lift my 30 oz Yeti and I was unable to because it was too heavy. Fortunately for me, my sweet friend gave me a much smaller tumbler as a gift that also reminded me to stay Anchored in HOPE. I continually drank water with lemon throughout the day and my arm was not sore when lifting a much smaller cup.
(I do not have a medical background, this post was written based on personal experience.)