Good jog again today, Achilles tendon was on my mind when i went in and when i was done i was down with a sprained ankle. Nice steady pace as the previous jog through out and within the first 2 laps realized how important the breathing rhythm was. When i got it wrong i went into either oxygen deficiency or oxygen excess but when i got it just right i was effortlessly gliding along. Around the 15th lap my right inner knee joint started hurting but pushed through and now its fine. At the end of the run felt pain in my rear inner ankle and thought it was the Achilles tendon but the pain was localized in front and to the side of it. So applied some ice and hoping that its not a sprain, or not at least a severe one.