7 different ways to boost your overall running endurance. Really good article.
Wow- who knew? Healing your "mummy tummy" :-) Diastasis Recti: how to heal from having kids and get your abs back together. I didn't know the separation between your abdominal muscles will constantly cause the "pooch" and crunches could actually worsen the gap. There are exercises here that will help to strengthen your core and make that gap smaller.
5 exercises to burn 200 calories in 3 minutes, I would have never known.
Your achy knees while running may be due to weak hips. Strengthen the hips and running may be enjoyable again... not to mention, these exercises help shrink your hips!