Lately I've been finding it hard to find the time to work out for an hour, 4-5 days per week. So this is what I've done. Instead of doing sets with a 2-3 minute break in between, for an hour, I now do about 20 solid minutes with little or no break. Believe it or not, I have been seeming to get better pumps and I am much sorer the next day. Overall I just feel that its been a better workout. Anyone else work out in this fashion or have any opinions?