My friend's around 35 weeks pregnant. How many hours of sleep is essential for her? And how can she manage to sleep with the big belly as it's uncomfortable. Any suggestions?

Your friend can take a look at this article on the topic of "sleep" in the third trimester: http://www.babycentre.co.uk/a547418/sleep-in-the-third-trimester Her sleep will likely be interrupted due to various factors (such as frequent trips to the toilet, back aches, leg cramps etc). The article suggests lying on her left side with pillows wedged between her legs and behind her back. Alternatively, if lying down is too uncomfortable, she could try resting on a sofa instead.