I was a CATHE devotee for many years through my 20s and 30s. Sometime afterward, I ventured into Beachbody workouts for a change. I had been doing them for years when I was then diagnosed with Brain Cancer in 2014. I kept up with my fitness best I could after my first brain surgery and through treatment, but in Nov 2018 they found a new tumor which required a new surgery and more chemo. During that treatment I gained 20lbs and lost a lot of my strength and muscle tone. In October 2019 the tumor began to regrow and I am currently on chemo. I am exhausted all the time but still manage daily workouts as best I can. Sometimes that means only a fitness walk, other times I challenge myself. I have begun adding some of the CATHE workouts from my past but notice how much harder they are for me now. Mostly the circuit type workouts like low impact circuit and cardio and weights. I waiver between wondering when to push through and when to back off. Maybe the combination workouts are too challenging while on the chemo? Maybe focus on lower impact cardio until I finish chemo? What are your thoughts and suggestions?