Under what circumstances should one not practise?
As practising Qigong leads to an intensive connection between human beings and Nature, it neither is advisable to practise outdoors nor inside as long as Nature is unbalanced. This applies for example to bad weather, storm, hail, intense heat, thick fog and thunderstorms.
One should also postpone practising as long as one is very tired or strongly emotionally agitated. It is also advisable not to start practising with an empty or a too full stomach. One should wait 30 to 60 minutes after a meal before starting to practise. And vice versa, one should also wait 30 to 60 minutes after practising, before one eats something.