I was reading somewhere that gravity forces pull down germs in air which is close to land like 1-2 feet, I don't know it true or wrong. If it's true than I feel eating while sitting on land is fine. 2nd: we people mostly wear traditional dress which are very loose as compared to western pants and shirts, so sitting on land is really very comfortable for us. I wear both traditional as well as western dress, honestly local dress are very comfortable 😂