The practices taught by Sunil Sharma are not very demanding or exhausting physically, but stimulating on an energetic level. We did joint and ligament loosening exercises, exercises targeted at activating energetic centers along the spine, simple asanas, face relaxation exercises, breathing, concentration, and meditation techniques.
As Sunil Ji explains it, we use methods of hatha yoga for purification on physical, and then emotional and mental levels, to reveal our true natural self. This process not only helps people to understand themselves, but also heal from emotional traumas and problems. It felt like this routine is a really good way to do it.
Sunil Sharma's class was close to what I imagine as "real yoga" as opposed to mere physical exercise - the process of introspection and developing the awareness of subtle things inside one's body and mind, with particular attention to breathing, relaxation, and work with energy.
I got an impression that Sunil Sharma is a knowledgeable and experienced teacher with a deep understanding of processes of the mind and human psychology.
The class is definitely accessible for beginners, older people, practitioners with injuries, as well as experienced students who want to learn a more subtle process of yoga.