Reviewed by shiftinggears
These are great fast feul when you need it. Easy to digest and quick to eat. I usually eating one before I head out on a long run or ride. I like using these, as well as, Clif Shot Bloks to mix things up.

Reviewed by connortsai
These little packets are great for a boost during a competition. I was first introduced to these while doing a marathon a few years ago. Volunteers were handing them out during a re-fueling station and these GU packets sure did help throw me back on track. However, they can become a sticky mess if you don't tear them off the right way (which can get hard to do when you're exhausted). This would be my only complaint when compared to Clif Bar Shot Energy Gels, which have a little cutout that keeps the tab connected to the packet when torn off.

Reviewed by trime
This is the formula that works for me. I eat one GU right before my start, another GU right after I get on the bike, another GU right after transition 2, and then an extra just in case I need that extra kick. It's hard to tell if you're hungry when all that adrenaline is rushing, but if I'm ever in doubt, I guzzle a bunch of water with one of these and don't worry about it. It's key to drink a lot of water with GU so that you don't start cramping; it's what I do and I've never had any issues. Pros: easy fast fuel. Cons: sticky if you don't tear the tab off correctly (use your teeth and rip that sucker off!)

Reviewed by Jorge
So far to date, these are my favorite gels I have tried. There are a lot of companies making gels these days, but I think these guys got it down. The GU flavors are really good and the formula works in my book. I tried chocolate and it reminded me of eating chocolate pudding when I was a little kid.