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I've had the exact same thing with Spezzy carbon cages. The lip at the bottom isn't very large (or not large enough), and the bottle falls straight through. The bottle doesn't actually crack the frame; it slides through and slowly rubs the paint off. I currently use Cinelli carbon cages. The lip at the bottom covers the entire bottle diameter, and wraps back up. Can't happen anymore. As a bonus the Cinellis don't lose water bottles on the rumble strip past the chicken farms on the way to Cradle. The only carbon cages I know that work. But they aren't the cheapest, or the lightest. Spezzy plastic ones work too. Some alu ones work -- but some alu ones snap with a full bottle and a bumby road. Newer Spezzy carbon cages have a longer lip. You can test it: mount a bottle cage, and ram the bottle on the seat tube down hard. The seat tube cage goes first, because the weight is almost straight down. Don't be a weight weenie on the cages. You'll lose a bottle or a frame. Oh, and have the frame checked. The frame's not necessarily a write-off -- it might just be paint, or it might not be structural yet. The damage looks like the bottle just rubbed a bit: not cracked.

Don't do this if you're not fit. I'm not joking. Don't eat before you do this, or prepare a bucket. Don't do them two days in a row -- or even twice in a week. Indoor trainer (because you'll see stars, and not the oncoming car; your legs will be wobbly; and 4mins requires a very long road.) 1min as hard as you can. 1min rest. 2mins as hard as you can. 2min rest. 3mins as hard as you can. 3mins rest 4mins as hard as you can. 4mins rest 4mins again as hard as you can. 4mins rest 3mins as hard as you can. 3mins rest 2mins as hard as you can. 2mins rest. 1min as hard as you can. 1min rest. 4 mins is 240 seconds. Not 239 seconds. 1min rest is 60 secs, not 61 secs. As hard as you can is "puke up a lung"; not "a bit of burn". If you're not up to it, go 3mins. You wanna go harder? OK: 5mins.

All the blood moves out of your stomach to your legs. If you're stomach ain't empty, it soon will be. You can train for it by doing pyramids

Oi, that's a can of worms Sounds like you have a sloping top tube, so the first thing to remember is that if that angle is different (one slopes more than the other), you're going to get a different size. You want the virtual top tube -- the horizontal one. Then there's angles: seat tube angle changes the effective top tube. And there's head-tube height, which will change low your handlebars can go.

Not a bad idea. If possible both before and after a ride.

It could simply be heat, as opposed to dehydration -- especially since it's getting hotter. Wear fewer clothes (no undervest) Pour water over your neck. Try just below the helmet line: it's more cooling in your neck than over your head, and it won't run into your sunglasses. Use water, not an energy drink. You can try and weakening the mixture. More water, less sugar. You should check your caffeine intake. This is complicated, because it depends on how much coffee you drink monday-friday, and some energy drinks have caffeine.

Does it? It exists in a bunch of other countries. That doesn't mean it works. I've lived and traveled in countries with daylight savings. How does it work? And for whom does it work?

It's been proven not to save electricity. I repeat: daylight savings does not save electricity.You could just get up earlier, you know. It's nice to cycle at 5am in daylight. Or you could work for one of the banks and start work at 7.You wanna synchronize clocks according to a calendar in a country with zero education? What, are you nuts?

I suggest we split the problem: 1. too many closures for too many races (not just cycling!) 2. 4 or 5 or more abreast when the road isn't closed (huge bunches) 3. defacating in driveways (apparently...) 4. dangerous driving (by cars; residents and others) 5. some of the mud-slinging (by everyone) 6. incompetence of race organisers (yes, there is this!) 7. lack of communication between governing bodies (various sports, council or whatever, residents.) 8. litter (goo wrappers by cyclists, and beer bottles by others) I'd like to thank IanJ and Chucky for wanting to fix the problem, as opposed to throwing fuel on the fire. It will escalate over time as summer comes.

Mineral bonk. It's like a sugar bonk, but you're lacking some kind of mineral. Usual culprits: zinc, calcium, magnesium, potassium. I'm not a doctor, but it's my guess based on personal experience. Do not just arbitrarily start taking multivitamins to fix it, please. If I'm wrong, you could make it worse.

I've used a normal tire on an indoor trainer. It makes a bit more noise, and leaves a black residue behind the IDT (tire wear), but I've never had a serious problem. Take note that your tire will generally wear quickly.

OK, I'm gonna try the bandana thing. Thanks everyone. (I already use a cycling jersey, rehydrats, massive amounts of sunscreen, etc.)

Googling CoolX... yields X-Ray scanners Doh! Where can I obtain some?