Planks can be modified to work for anybody. They are an effective full body exercise to build core strength and prevent injuries.
A study found that vigorous intense activity in one minute bursts can extend life due to all causes, cardiovascular events and cancer.
It is not bad to do the same exercises every day. Do what you enjoy. If you are plateauing or getting injured, try to switch it up.
The body’s detoxing process is already done naturally, but practicing yoga has many other benefits such as a healthy spine.