We all know that sleep has positive effects on energy, health and wellbeing, so surely getting more sleep at the weekend must be a good thing? Well.. not necessarily. Irregular sleep patterns can have negative impacts on sleep quality, and disrupt our circadian rhythms - so lying in could be a double-edged sword...  In this blog we’ll look at the evidence for and against catching up on sleep at the weekend, and how to make the most of your lie-in without negative effects.