How is it possible to feel so exhausted at the end of the day? I'm fit and healthy (even though I've given up running for a bit due to knee problems, not menopause texted). I cycle to work, walk the dog & am generally very active but last few weeks I'm so tired I could cry by about 5pm! Hardly ever see hubby as I go to bed earlier than him anyway but now I'm completely crashed out as soon as I hit the mattress! He works afh all week so by the time he's back on a Friday I'm good for nothing at all.