May be once or twice per month to full relax, but it depends a lot on your needs and family situation. For example, if you have kids, things change a lot. But

May be once or twice per month to full relax, but it depends a lot on your needs and family situation. For example, if you have kids, things change a lot. But in general, dedicate 3 hours per day to anything except your work, it's more valuable than 21 hours during a weekend.