To be effective, exercise is muscle soreness, in other words, the process of muscle growth.

If you sweat, it only means that you exercise a lot, but the quality is not very high.

If you really want to get exercise, you must have parallel mass.

If you want to lose weight, you'd better sit-ups instead of getting up completely.

See how they do sit-ups in the movie "This black boy is not too cold". That's the way to get the most exercise.

Another suggestion: stand against the wall for five minutes every day. Be sure to stand straight. It usually takes 3 days to get the results. If you don't believe me, you can experiment for three days.