Have you ever had a chance to taste Tea or Coffee served by the vendors in the train? During your travel especially during the day travelling, you will feel like munching or drinking something. If you have any ideas like drinking tea or coffee by the walking vendors, just drop that idea. Have seen pictures from one of the blog spot that tea/coffee can is filled with water coming from toilets. Recently had one tea because of headache but ended up in the same bitter taste.
Also there are lot of Items that are sold by those walking vendors are not good for health for example had some groundnuts and ended up with headache. But food items that are sold in authorized shops located at railway stations are OK type items. For example had a chance to have idlies as one of the food Item in Madurai railway station and they are good. In Madurai, normally temperature is on the higher side and you will end up with making yourself comfortable by removing some of your clothes etc. But there is no need to follow it everywhere say for example in a rainy season in chennai, while standing on the road side etc.
