Seasonal regimen in Ayurveda
In every community change of food and clothing is adopted depending on season's temperature and other weather conditions. To attain natural immunity Ayurveda advises changes in food and clothing according to seasons action on body. i.e. relation of body and atmosphere; atmosphere and disease. This knowledge helps us to modify diet or clothing according to change in atmosphere.
Seasons - There are six seasons explained in Ayurveda, but manifestation of all six seasons is very rare, minimum of two are felt universally. This manifestation and non- manifestation of seasons leads to cultural identities and diversion. Seasons cause changes in health and disease pattern from one place to other.
Each season along with place creates different type of stress on body functions like appetite, circulation, excretion, temperature etc. Diet what we take should compensate for extra stress and protect those organs which are more stressed in that season. For e.g. summer causes more stress on sweat glands whereas winter causes more stress on kidneys; both are involved in excretion. Diet should supplement water lost by sweating in summer where as in winter it should stimulated kidney to maintain urine output.
Common rules of seasonal regimen -

1. Depending on place each seasons regimen is to be done.
2. Only naturally grown items are to be used
3. Fruits and vegetables natural to that place are to be used
4. Fruits and vegetables grown or those can be grown in that place to be used
5. Fruits and vegetables, which remain unspoiled without artificial preservation methods, are more beneficial.

For vegetarians -    Fruits, vegetables, dicotyledons, Monocotyledon should be used in order with preference to the later. (I.e. fruits less and monocotyledons maximum)
Food should be associated with raw fat (uncooked fat) like Ghee or oil (raw oil or ghee should be used with cooked and warm food)
Curds is forbidden for people who do not exercise
Fruits that are sweet should be eaten before food, which are sour should be eaten with food. (Fruits after heavy food is highly dangerous for vegetarians).

1. Vegetables which perish fast should not used on regular basis
2. Garlic should used after frying in oil
3. Milk and milk products should not be consumed after use of garlic in tropical countries
   For non vegetarians
4. Food should be associated with fiber like leafy vegetables
5. fruit should be eaten after non-veg.
6. Regional specific beverage can be taken in moderation
7. Milk products should not be used after intake of non-veg in tropical climates and garlic should used only after frying in oil