Кстати, вот вам про нагрузки  http://3.bp.blogspot.com/-q4VzYWPY4qM/UOHDXZ24C0I/AAAAAAAAAHM/IsDQNwshwuY/s1600/NW+Graph.PNGhttps://highpeaknordicwalkingdotorg.files.wordpress.com/2013/02/nordic-walk.gifhttp://www.nordicwalkingemilia.com/contents/media/benefici%20nordic%20walking.jpg