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With the clocks going forward and the nights getting lighter, how does it make you feel? Happier? More motivated? Increased energy?! Scientist Ben Valsler tells Gillian Russell about the impact light has on us and explains what is actually happening to both body and brain.

How much does retirement liberate you in terms of getting fit and enjoying life? Dr Melody Ding from Sydney University shares her recent research and explains how those who had retired were more active, sat down less and slept more than those in work.

Pat Gillespie felt invisible when she turned 60 and retired; now having taken up dance she says she's found her identity and gained a social life as well as benefiting from the exercise itself.

Sunlight gives us most of our vitamin D - more manageable perhaps now that the clocks have changed - but how do we in Scotland cope when the long dark winters give us very little sunlight? Dr Helga Rhein explains why vitamin D is important, how you might know if you are deficient and suggests ways we can increase our intake.