This is a myth
Rumor has it that rigorous brushing can help stimulate blood flow to your scalp which in turn boost hair growth. However, that is not true. In fact, over-brushing causes too much friction for your hair to handle, leading to frizzy hair, dull-looking hair or even hair breakage! Here is a word of advice! Brush your hair minimally (only when you need to detangle or style your hair) and use a suitable comb for your hair type to minimize damage to your hair and scalp.