How the classical physicians adjusted food, exercise and sleep through the year, and why local, in-season food is the best base.
Updated October 2026 · 10 min read
"And a sign for them is the dead earth: We give it life and bring forth from it grain, and from it they eat. And We placed in it gardens of palm trees and grapevines, and caused springs to burst forth within it, that they may eat of its fruit..."
Qur'an 36:33-35"Let man look at his food: We poured down water in torrents, then split the earth in clefts, and caused to grow within it grain, and grapes and vegetables, and olives and palm trees, and thick gardens, and fruit and pasture, as provision for you and your livestock."
Qur'an 80:24-32 (abridged)These verses ask us to look at where food comes from: rain, soil, plants, orchards. The Qur'an also mentions the two seasons of travel and trade, "the journey of winter and summer" (106:2), and says that Allah gave garments "that protect you from the heat" (16:81). The year has a rhythm, and people lived by it.
The Greek physicians, and Ibn Sina after them, described the year as four seasons, each with its own qualities of heat, cold, dryness and moisture. In the Canon of Medicine, preserving health includes adjusting your regimen as these change. This is the classical outline, which uses humoral theory, so we treat it as a framework and not as medical fact:
| Season | Classical quality | Classical advice |
|---|---|---|
| Spring | Warm and moist, the most balanced season | Lighter food, more fresh greens, moderate exercise, a time to clear out the heaviness of winter. |
| Summer | Hot and dry | Cooling, moist foods such as cucumbers, melons and sour fruit. Drink more, eat lighter meals, exercise less in the heat of the day. |
| Autumn | Cool and dry, changeable | Moistening, nourishing foods. Take care with sudden changes of temperature, when many people fall ill. |
| Winter | Cold and moist | Digestion is strong, so heartier, warming food is suitable. Keep warm and keep moving. |
An idea that runs through classical medicine, going back to Hippocrates' Airs, Waters, Places, is that the land shapes the people on it. The air, the water and the plants of a region form the body that lives there, and a physician needs to know the place. The same physicians stressed habit (العادة): a person generally does best on the foods they grew up with, and big changes in diet should be made gradually.
From this follows a simple rule that was obvious to everyone before refrigeration and cargo flights: eat mostly what the land around you produces, and eat it when it is ripe. Classical drug and food compendia such as Ibn al-Baytar's al-Jami' describe foods by where they grow and when they are at their best.
"O people, eat from what is lawful and good on the earth."
Qur'an 2:168Many scholars understand tayyib (good) to mean wholesome and pure, in addition to being lawful. Fresh, ripe food from a nearby farm fits that description well.
People often assume local food has a much smaller carbon footprint. A large study of global food systems found that transport is, on average, only a small share (roughly 6 percent) of food's greenhouse gas emissions. What you eat matters more than how far it traveled: beef and lamb have a far bigger footprint than vegetables, legumes and grains, whether they are local or not. The exceptions are fresh, fragile foods flown in by air, which do carry a high transport cost. A heated greenhouse in winter can also use more energy than shipping a crop from a warm region.
So the best approach is not to refuse all imports. Make local and seasonal your base, eat more plants and legumes, waste less, and treat the foreign foods you enjoy as extras.
Here is a rough guide to what is often in season in this region. It differs between countries and farms, so check what your own market sells.
| Season | Typical local produce | Eating and living |
|---|---|---|
| Spring | Leafy greens, herbs, peas, broad beans, strawberries, apricots, early cucumbers | Salads and herbs with every meal. Longer walks and outdoor training. |
| Summer | Cucumbers, tomatoes, melons, watermelon, figs, grapes, okra, eggplant, fresh dates (رطب) | Light meals, plenty of water, fish, yogurt drinks. Train early or after sunset. Avoid the midday sun. |
| Autumn | Pomegranates, dried and ripe dates (تمر), pumpkin, apples, pears, olives | Start to add warm soups and stews. Dress in layers as the temperature changes. |
| Winter | Citrus, carrots, turnips, cabbage, leafy greens, lentils and chickpeas, nuts, honey, olive oil | Heartier meals and warm soups. Stay active to keep warm. Get daylight for vitamin D. |
Classical sources: Ibn Sina, The Canon of Medicine, Book One (regimen of the seasons; habit); Hippocrates, Airs, Waters, Places; Ibn al-Baytar, al-Jami' (foods and drugs by place of growth).
Modern research:
This page is for general education. It is not medical advice and does not diagnose or treat any condition. Talk to a qualified doctor about your own health, and do not delay treatment because of something you read here.
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