Can one who has performed prapatti perform Surya namaskaram (a form of yoga)? Will performing yoga lead to association with demi-gods?

Yoga can be performed for physical well-being. If Surya namaskaram does not include any sankalpam or mantra, there is no association with any demi-god. One could think of Surya Narayana Perumal while doing Surya namaskaram.