I just noticed it was missing too. I never used to use these trackers but for the past few months I have been loyally doing an exercise program and this feature was a critical part to my success of losing weight already. I loved that it was part of Samsung health and I am extremely mad that it is gone. I know everyone has a different opinion on watching these things so carefully but personally it has played the key role in helping me with my weight loss. There other apps, yes, but I love Samsung health and really don't want to deal with extra apps to track. It was very informative and the break down was put into easy to understand parts. PLEASE bring it back! I didn't even get a chance to save my past data and I used it with my galaxy watch active 2.
Look elsewhere. I now have the Samsung watch and few apps synch with it and I can't use it for the primary purpose I bought it... furious. I also have a Samsung phone.. never again.