I suggest using a personal trainer with good qualifications to ensure that your workout is appropriate for your goals

I’m following the following general approach 20-30 minutes of aerobic exercise at a moderate heart rate level. Then 45 minutes of weightlifting and finally 10-15 minutes of stretching.

I do this 5 times a week and find that I burn enough calories that thus far (2 months of zytiga and orgovyx) I have maintained my weight.

I’ve read that it’s crucial to maintain muscle mass to avoid systemic diseases, so I’ve been very disciplined about this routine. Further, even when I’m feeling fatigued, that with willpower, getting in my workout, improves my energy level and general wellbeing.

Hope my limited experience helps!