DS is 21 months and I tend to get about 5-6 hrs sleep a night sometimes broken, sometimes straight.I still always feel so tired and so often have a nap when he naps over lunchtime for 1-2 hours while my DD is now back at school. I feel guilty that I don't get things done in the house but I always seem to feel so groggy and tired that I want to take advantage of nap opportunity! Whenever I mention that I've had a nap to another mum they laugh that it's a real luxury and say they could never do that because that's their only chance to get things done... which makes me think am I actually being lazy for having naps like this? Should I suck it up and be more productive? Is it normal to still feel tired with this amount of sleep?