I am currently lying in hospital after a so far 7 night stay. I am post chemo for Hairy Cell Leukaemia treatment that commenced 17 days ago. I am doing well eno

I am currently lying in hospital after a so far 7 night stay. I am post chemo for Hairy Cell Leukaemia treatment that commenced 17 days ago. I am doing well enough but it's a struggle. ( I previously was successfully treated for the same chronic condition 9 years ago). My normal weight is around 80kg (I'm a 59yo male). I think I got down to 79kg prior to treatment this time - we actively sought exercise in the prior weeks through bushwalking, walking my dog and just general DIY stuff at home. I certainly this chemo campaign a lot fitter than the first time. Post the first 5 days of chemo this time I dropped a kilo - it's hard to maintain appetite. Managing the fever that got me hospital admission meant that I have to take in a lot of fluid via IV. I reached a quite bloated 83.5kg only 2 days ago. I then shed 1.7kg in 1 day (no vomiting involved) - I'm sure this is pretty hard to achieve through normal gym work. My goal yesterday for today's weigh-in is 81kg. Though my nurse just told me she administered 500ml (so 0.5kg overnight). I'm guessing being down to 81.4kg is more realistic now. I couldn't exercise much yesterday as I was also taking onboard a weekly chemo infusion. Hopefully I'll be able to do some laps of the hospital ward balcony with my trolley as I did two days ago. I definitely exercise in hospital (walking) as much as my capacity allows.