What is the difference between 'take an exercise break' and 'train your muscle'?
Secondly, you did not mention taking launch and dinner? Those two can not be excluded.
Also, your article is too short, but, although contain useful information. I also expect you to really specify on taking fruits which is a requisite to a healthy leaving.
I mean, training your muscle is more like... weight lifting (?) whereas exercise break is more like... jogging and stuff, milder things.