Year after year, I suffer from what my mum used to call the “post-Christmas blues” but is commonly referred to as SAD (Seasonal Affective Disorder). As a result, I am always interested in any product that claims to be able to help. I try to use my lightbox around this time of the year to keep those low and tired feelings away, but it is quite large and requires plugging in at the mains, which means if I am not sat at my desk first thing in the morning, I miss that important early dose recommended for my symptoms.