Trying out some different core training this winter - doing more with the exercise ball and medicine ball to challenge myself after 3-4 winters of doing pretty much the same stuff.
Did purely exercise ball stuff today - exercises 8-18 of these (except for 14 which I don't seem to have the back flexibility for). Couldn't work out 19 at all - kept just falling off. 15 was just weird! Didn't really feel any benefit.
Single leg 4 was how I strained my hamstring last week.
http://greatist.com/fitness/workout-stability-ball...
Threw in a few of these at the end too, but was getting tired by that point -
https://www.youtube.com/watch?v=NzQw88-xANk
Looking forward to trying a few of these -
https://www.youtube.com/watch?v=C1zlZjpTzQ4
Any suggestions? Not interested in leg exercises - do plenty of leg training already.