Hi all. Just started c25k after 30+ years of doing no real exercise and being significantly overweight. Completed day 3 of week 1 today and although I did (just) manage the runs it was really tough. Thought my heart and lungs would explode. I am wondering if I should repeat week 1 before trying to start week 2 as I don't know if I am capable of more. Did anyone else find day 3 just as tough as day 1? Any advice please?