I was diagnosed with high blood pressure and was taking atenolol/cholarthal 1 daily but was sick to my stomach and fatigued... I started taking just half a tablet....and stopped all together but now feel like I felt when I took a whole tablet.... tired run down. Started exercising more riding a bike about 30 miles a week and felt better for a time and usually when I laid off and muscles recovered had a few peak feeling days. Now I seem to be back tired and sleep disturbed.. I could always sleep well and even though over weight about 6 ft. 250 always could perform physically... what's up with this body?