Posted 17 August 2014 - 06:29 AM
My opinions on sandbags
1) More volume is better than less volume. When the sandbag is less than three quarters full, there's too much shifting. Odd objects are good as long as they are not too odd.
2) Less weight is better than more weight. Barbells and dumbbells are for strength training. Sandbags are for conditioning (unless one is doing event training for strongman). I have seen plenty of trainees let pride get the best of them and load their sandbags in excess of 200 pounds. The problem is that they are not strong enough to do much with sandbags that heavy.
3) This leads to the matter of density. If more volume is better, and less weight is better, then we must find a filler with lower density than gravel or sand. I like to use pine bark mulch. Using a mixture of mulch and pea gravel, my IM sanbag is about 7/8ths full and weighs approximately 115 pounds. It's perfect for overhead pressing, shoulder carries, shouldering for reps, etc.
I also own an Ironmind sandbag. I use it weekly.