Running Program

I have increased my running program to 30 minutes a  day.  Anlene Gold milk powder  recommends 30 minutes   a day. It seems the American Heart Association also recommends  30 minutes for 5 days a  week.

There appears to be some improvement in stamina for the last few days with this new program but I also read that there are greater benefits for exercising for an hour so I may try that out every now and then.

https://www.washingtonpost.com/news/to-your-health/wp/2015/10/06/new-study-for-optimal-heart-health-americans-should-double-or-even-quadruple-the-amount-of-exercising-theyre-doing/

Update 2/12/2015 - Have been sticking to 30 minutes as one hour seems too much. Furthermore from the article, it appears that 30 minutes of running appears to be the equivalent of one hour of moderate exercise.

Update 21/12/2015  -   Have been doing 5 km runs these days which can be slightly less than 30 minutes but  it seems that there is some benefit in doing shorter sessions with high intensity too, based on the article below

http://www.ctvnews.ca/health/brief-high-intensity-workouts-equal-longer-medium-intensity-training-study-1.2707792

Update 25/3/2016 Have reduced to 2 miles due to the heat wave but I guess that could be the right amount as 5 km can be quite tortuous sometimes.

Update 5/5/2016 Have been doing 5 km the last two days since the heat wave ended. 5 km is healthier I suppose but can be quite tortuous sometimes.

Update 7/5/2016 It seems like I have been affected by the hot weather again so it is back to 2 mile runs I guess.