DS is three and has low iron, but takes a supplement (highest dose possible) and has never complained of feeling tired before, he's usually a bundle of energy.
Recently he's been saying his legs are tired and he wants to be carried up the stairs, and wants to make dens and lie down saying he's tired.
He's still pretty active - yesterday he was on his scooter the whole 30 minute walk to town and back, spent an hour running around soft play, played bike races with a friend then went to another friend's house to play and was still scampering about when he got in. He's not falling asleep during the day but it sleeping really well at night (not unusual, we are lucky and he always has) but I'm wondering if this is just because he's been using his scooter and bike a lot more (we have ditched the pushchair more and more recently) or whether something to keep an eye on.
I wondered if it could be a growth spurt as he's under average height at the moment so due to shoot up again. He's still eating well, playing normally, seems full of energy when at soft play etc...
Today for example after yesterday's busy day he's saying he's tired and wants to lie down - he's my first so I;'m not sure how much activity is reasonable for knackering them out!