Of course you can sing every day. You can relax yourself by singing at any time, and there is not so much pressure to do things. Whether you sing well or not, singing often will help your health. I also like singing. No matter how busy the work is, I will hum songs while doing things, so that people will have no worries and will not feel that they can easily finish the day's work, which is quite good. Singing every day is good for both body and mind as long as you are happy.