This practice is all about balancing the upward and downward moving energy of the body (Udana and Apana Vayu) and is a must have for the moments where you feel 'low and stuck'. It'll be hard to make a start if this is the case but just switch this video on and start right from your chair/couch (you can always go grab your mat later if you feel enthused) and try to get a bit of fresh air today even if it means wrapping up warm and braving the cold wind.