If you have ever switched from work to your phone for ten minutes and returned to your desk feeling just as tired, the problem may be the type of break rather than the fact that you took one.
Learning how to take better breaks during the day means matching the break to what needs a change. After prolonged screen work, your eyes may benefit from looking farther away. After sitting for a long time, your body may benefit from standing or walking. After concentrated work, stepping away from the task can help reduce fatigue.