Although it is not an exact science, the consensus seems that to see benefits from meditation, you should aim for at least 10 minutes a day at a minimum. However, each person will respond differently, so it's important to test out longer meditation periods if 10 minutes does not seem to be making a difference for you.
Is it bad to meditate every day?
Daily meditation can help you perform better at work! Meditation helps clear our minds and focus on the present moment which gives you a huge productivity boost. Lowers risk of depression. Some research suggests that daily meditation might be able to help treat symptoms of depression or lower the risk of depression.
Can you meditate constantly?
Keep practicing the same. Yes, it's perfectly normal. These waves are natural and beneficent: their waking up and moving up the body is inextricably part of this kind of meditation.