I am a 44 y/o male, diagnosed with CML in December and am also having problems with post-treatment energy levels. I am also taking Tasigna as my treatment. I was very physically active prior to CML, but the CML caused me to be anemic for 4 months, so my activity dropped significantly and I am gradually increasing my activity. My biggest problem has been daily fatigue and overall pace of life, even though I have a low energy desk job.
I climbed stairs at work daily prior to CML and that was one of the first things to accomplish after I started taking the Tasigna. That helped a lot with increasing my overall energy level. I stretch 3 times a week, but during my initial recovery, I began stretching daily. Both of those activities helped me increase my energy level within a short time frame.
My main issue with fatigue has been a noticeable decrease in sleep since I got CML. I find it interesting that you are able to get 8+ hours of sleep. I never had problems with insufficient sleep until I got CML and I have not had 7 hours of sleep since November, even on those nights I am very tired. Some nights, I only get 5 hours of sleep, which really wears me out the next day. Prior to CML, I could easily get 7+ hours of sleep. I don't know how much is from being anemic for 4 months and how much is from Tasigna.