Our eating habits are very important for good health and a strong body. There are times when most of us would rather eat sweets and icecream than meat and rice. Sweets and icecream are not bad for the stomach if we eat them at the end of a meal. If we eat them before a meal, they may take away our appetite (our desire to eat). It is important for us to eat our meal at the same time each day. When we feel hungry, it is said that our body needs food. When we feel angry or excited, we may not want to eat. A long time ago, in England, some judges used to decide whether a man was telling truth by giving him some dry bread. If the man could swallow the bread, it was a sign that he wasnt telling the truth. He was telling lies. Although this seems very strange and foolish, it is indeed an excellent way of finding out the truth. A man who is worrying something has difficulty in swallowing anything dry. Because he is worrying, he loses his appetite and does not want to eat.

我们的饮食习惯对于健康和体魄来说非常重要。 在很多时候，大多数人宁愿吃糖果和冰淇淋而不是肉和米饭。如果我饿们在饭后吃糖果和冰淇淋，对胃来说并没有什么不好。 （但是）如果我们在饭前吃，他们会使我们食欲（吃东西的欲望）消退。每天在同一个时间吃饭对我们很重要。 当我们感到饥饿，我们的身体就需要食物。 当我们感到生气或者兴奋，我们可能会不想吃东西。 很久前，英国的一些法官给一个人一些干面包以决定他是否说的是真话。如果这个人【能够???】吞咽面包，就表明他没有讲实话，他在说谎。 尽管这看上去很古怪并且愚蠢， 它却是找到真相的绝好办法。一个人在他为某事担忧焦虑之际，是很难吞咽任何干的东西； 因为他在忧心重重，他便没有什么胃口，不想吃东西。

【】感觉此文前后有些矛盾，请检查这句话：
If the man could swallow the bread, it was a sign that he wasnt telling the truth.
是could呢？ 还是couldn't ?