New Delhi, Jan. 2 -- Winter is the time when many people catch a cold and flu unexpectedly. One moment you feel fine, and the next you're sneezing a lot. However, many don't realise that it's one way in which your body tells you it needs more activity. Like muscles that require regular exercise to stay strong, your immune system also benefits from daily movement. You don't need intense workouts or hours at the gym. Simple, gentle yoga asanas can improve blood flow, increase lung capacity, reduce inflammation, and help your body fight infections more effectively.

8 yoga poses for the immune system

Ayurvedic doctor Dr Gagan Tiwari at Kailash Health Village shares yoga poses to boost immunity and keep you warm during winter.

Surya namaska...