I Am 69 Years Old And Have Been Active Until

I am 69 years old and have been active until recently,,, lateral I have no energy. I sit for Kong periods of time bbeing lazy and having no desire ti work do laundry read hobbies etc. zero energy. no appetite for meals. just quick fixes. also just found out I have high blood pressure 185/72. high cholesterol. I try to walk every day and do bikram yoga for 90 mins. also get lightheaded should I bee doing yoga in a very hot room 110 g
degrees