Taiji Qigong Shibashi (18 forms)
Here is a very popular qigong set of 18 forms. It is mainly a deep-breathing exercise, so lift your head, relax, and breathe in and out as deeply as you can. Generally, breathe in while slowly straightening your legs, and breathe out while bending them. This is the 5-minute version.
We have more resources in our playlist https://www.youtube.com/playlist?list=PL-n3k74YvCOaoQSy9dQeqw3KvRFZ7rrbi .