Workout- other

• Do you mean you don't want it there or you don't like the colour? That cannot be changed.
• If you mean the workout has already started, swipe from left to right and hit the X to end the workout
• If it will not budge then force close app stuck on screen:-

Press and hold side button until the Medical ID and SOS screen appears.

Then press and hold Digital Crown til the clock face appears

Or

if the side button is set up to show recents, press it briefly, find the app, swipe it left, tap the big red X

You're welcome, good luck.

It could also be that the others have the smaller "Series" watches like my SE