Question

smiling needs lesser efforts than frowning​

Answer 1

Answer:

Scientists have studied the muscles needed for both facial expressions, and to do a small smile generally uses 10 muscles; a small frown uses 6. On average, a smile uses 12 and a frown 11. However, since humans tend to smile a lot, these muscles are stronger. A frown may be slightly more effort to produce.

Explanation:

Hope you found this answer helpful