I tried to tag my question with exercises, however this tag was replaced by the exercise tag.
I'm not sure if it's the same in other countries, but in Australia, exercise refers to any general activity that increases the heart rate e.g. swimming, football and running are all types of exercise.
However, push-ups, sit-ups, squats etc. are exercises.
If this is the case in other countries I suggest that exercises not be a synonym of exercise as they are not the same.
If exercise is removed as a meta tag per this question. I suggest we definitely have an exercises tag so that people can find questions that are purely about doing those types of exercises (push-ups etc.).
Maybe fitness trainers have some other more specific way to refer to exercises? If this is the case then please just suggest this to me.