Physical rest can be passive or active. Sleeping and napping are good examples of passive physical rest whereas yoga, pilates, massage, and stretching are restorative activities that can help you feel physically rested while also improving your body's circulation and flexibility.
Dr. Dalton-Smith says that having a sedentary lifestyle can also cause us to feel constantly exhausted. On the Do Gooders podcast, she states that it's crucial to be aware of your body and be mindful of how you position yourself during daily activities. Just because you spend the majority of your time sitting doesn't mean that you can't have a physical deficit and according to Dr. Dalton-Smith there are multiple ways that your body can gain toxicity even while sitting still.
Listen to Dr. Saundra Dalton-Smith in The Do Gooders podcast from 3:28 to 14:05 for more details on physical rest: https://open.spotify.com/episode/0lvCtuqeIsiJuqSEDHH1qW?si=OtkB4ucRQpya2wnhDJFdnw&dl_branch=1