How to combat bed fatigue?

When I was receiving my Chemo treatment, 24hours infusion for 5 days at every 21 days, I experienced a lot of bed fatigue. I felt like sleeping wasn't right, sitting wasn't right or nothing was right. I had this crummy feeling in the pit of my stomach. My nurse and doctor said, the only way to combat bed fatigue was 'small exercise', such as a walk around the oncology ward. A small walk did make me feel a lot better and it was recommended to walk 3 times a day to avoid blood clots too!