Recommend two simplest methods to you (personal experience):
1. When reading books or magazines every day, lie flat on the bed with your legs at a 90-degree angle against the wall, so that you won't feel too tired, just put it down and your head won't stand it for too long;
2. Lie flat on the bed before going to bed, try to lift your legs and pedal your bike, and the movements should be standard.
I tried it, and it worked well.
Scented tea can be drunk together, which is better than drinking alone.