I just recently started swimming again after 10 years and way too much sedentary life. I'm in terrible shape. I never swam competitively but would eventually like to get in good enough shape to join a masters program. I've been swimming for about 2 weeks now and it feels good but I'd like to add a bit of structure to my swimming so I can achieve my goals. Does anyone have a very slow starting program I can work with? Thanks in advance.