It's not obvious and tiring ... it's best not to do it without perseverance ... 10 minutes will make you sweat ... 30 minutes will make you feel uncomfortable the next day ... but it will smell good after sleeping ... What you have done is actually very useful for riding a bike ... After three months, you will feel great ... and you are not tired of pedaling three times in bed. ..

If you have time, if you are a student or an office worker, you can consider riding a bike ...! I am a student, I think it is very effective, but it is not obvious ...!