How long should it take to completly digest a regular size meal?

Question

I am wondering how far before practice/running I should eat so it is fully digested and I wont throw up.

Answer 1

Digestion involves the mixing of food, its movement through the digestive tract, and the chemical breakdown of the large molecules of food into smaller molecules. Digestion begins in the mouth, when we chew and swallow, and is completed in the small intestine. The chemical process varies somewhat for different kinds of food.

its depends on the food
1 1/4 Hours
parsley

1 1/2 Hours
lemon
Irish moss

1 3/4 Hours
avocado
grapes
mango
olive, ripe
raspberry

2 Hours
blueberry
sweet cherry
grapefruit
orange
raisin
coconut milk
artichoke
beet greens
garlic
potato
tomato
brown rice

2 1/4 Hours
fig, fresh
pear, fresh
pineapple
strawberry
asparagus
carrot
cauliflower
lettuce: cos, loose leaf, iceberg

2 1/2 Hours
blackberry
date
fig, dried
gooseberry
peach, fresh
almond
dandelion
greens
leek
mushroom
okra
lima
bean
white rice
basmati rice

Note: Foods beyond this time should not
be eaten 3 hours prior to bedtime.

2 3/4 Hours
apple, fresh
apricot, fresh
currant
peach, dried
plum
watermelon
chestnut
coconut meat, fresh
pecan
pignolia
beet
summer squash
wheat bran

3 Hours

lime
prune, dried
filbert nut
walnut
broccoli
cabbage
Swiss chard
sweet corn
endive (escarole)
kohlrabi
rhubarb
spinach
winter squash
white bean
lentil
soybean
wheat germ

3 1/4 Hours
cranberry
cantaloupe
casaba melon
honeydew melon
olive oil
pomegranate
cashew nut
coconut meat, dried
celery
cucumber
onion
sweet green pepper
pumpkin
radish
rutabaga
sweet potato
turnip greens
watercress
snap bean
peas, fresh
peanut
millet

3 1/2 Hours
safflower oil
sesame seed oil
eggplant
mustard
greens peas, dried
soybean oil
rye

3 3/4 Hours
persimmon
quince
red cabbage
barley
wheat

4 Hours
Brussels sprouts
horseradish
turnip

Answer 2

a regular size meal takes around 4-7 hours to digest to digest completely
though a major part of the meal is digested in 4 hours
however
the size of the meal is not the only thing that matters
the posture you attain after having the meal is equally important
if you sleep immediately after eating the process takes longer
a similar thing happens if you exercise after eating
this is because a majority of your blood supply is unavailable for digestion
also
what also matters is the nature of the food
if you have taken a plenty of salad before the meal , digestion might also complete in just 3hours or even less
this is because salad or raw fruits and vegetables enhance the enzyme activity of our stomach
according to your question i think you should practice or run early in the morning when your stomach is absolutely empty
still if you want to know other times when you can work out
i think you should keep a gap of at least 4 hours after your meal

Answer 3

Completely digested would be 17-24 hours. Digested so that it is out of the stomach is 1 -3 hours depending on the volume of food you ate and how greasy it is.

Answer 4

http://uk.answers.yahoo.com/question/index;_ylt=AlCOR7NsBJR4_vNsIGgShqUgBgx.?qid=20061117072516AApIRXe

for digestion answer. However, you should wait an hour and a half at least after eating, depending on the size of the meal, before you start to do any form of exercise and so you don't get cramps.

Answer 5

6-8 hrs