First off, I’m not your doctor. I am a FORMER personal fitness trainer. Take my advice with a grain of salt. I have 20 years experience with exercise and have an idea for what works and what doesn’t. But everyone is different. Consult a doctor before starting any exercise routine.
Second, this is tumblr, where people take photos that they found re-blogged through 18 different sites. I may have taken your photo, added captions, and in some cases my site address. If something is yours, and you want it removed, kindly ask. If you don’t mind me using it, I will gladly credit you and link to your website.