Poor performance after lunch

Hiya!
A couple of weeks ago I went for a ride into Belgium with a colleague from work. Set off at 09.00 and by 11.30 we had reached Jalhay, about 45km away. I was feeling fine but hungry, although I'd been eating flapjack en route. We stopped for about an hour and I ate a baguette, small cake and drank 2 cans of still juice. After lunch we set off up Baraque Michel and I felt awful. It seemed like my legs had no energy and I couldn't keep up on the climb (around 6.5km at about 4-6%). I picked up a bit on the downhill and we eventually got home having done about 105km.
My question is, why so tired after lunch? Does anyone else get this? I normally ride distances of between 40 - 70km but have done over 100km before with no major problems. However, on those occasions I did not stop but ate on the move. Is stopping mid-ride a bad idea? Any suggestions to stop it happening again?
Cheers,
Steve
A couple of weeks ago I went for a ride into Belgium with a colleague from work. Set off at 09.00 and by 11.30 we had reached Jalhay, about 45km away. I was feeling fine but hungry, although I'd been eating flapjack en route. We stopped for about an hour and I ate a baguette, small cake and drank 2 cans of still juice. After lunch we set off up Baraque Michel and I felt awful. It seemed like my legs had no energy and I couldn't keep up on the climb (around 6.5km at about 4-6%). I picked up a bit on the downhill and we eventually got home having done about 105km.
My question is, why so tired after lunch? Does anyone else get this? I normally ride distances of between 40 - 70km but have done over 100km before with no major problems. However, on those occasions I did not stop but ate on the move. Is stopping mid-ride a bad idea? Any suggestions to stop it happening again?
Cheers,
Steve
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Could also just be lack of sleep or proper hydration from the days before, or anything really. i've had that happene, and it normally only happens if I have not slept well, and taken a pause for an hour or so from riding.
Cans of still Juice usually equates to censored loads of sugar, which will give you a decent burst of energy in the short term, but you will quickly hit a downer and feel worse than you did prior to drinking them.
What was your hydration like on the first leg? Maybe look at supplementing your water with some decent energy stuff.
Also you say you were feeling hungry.. thats usually a sign that you are in for a painful return home!
Lots of variables it could be, but I would first question your hydration/nutrition
It comes down t the body diverting blood flow to the stomach and intestines to digest the meal, and the bigger the meal the more lethargic you'll feel so little and often when on the bike is better. Here's a full explanation;
http://www.wikihow.com/Avoid-Feeling-Drowsy-After-Lunch
Thanks for the replies, chaps.
Blood diversion did occur to me, but my riding partner seemed unaffected, even though he ate about the same as me. I think that little and often is the way to go in future.
Peddle Up - not on that occasion, although I am currently enjoying a glass of Abbaye Val Dieu blonde, brewed by the good monks about 20km from here. It's VERY nice!
Steve
A busy digestion and a modest level of alcohol intake must be recognized as an inhibitor of athletic performance.
Yep. Alcohol is a mighty muscle relaxant. Sometimes that's a good thing, sometimes that's a bad thing.