四、亮亮想起网友Henry昨天给他发的邮件。Henry在邮件中提到他因为繁忙的学业经常睡眠不足，从而引发头痛。请你根据以上资料，并结合本单元所学的内容，帮助亮亮回复一封邮件，给Henry提出一些建议。
答案
示例:
Dear Henry,
I'm sorry to hear that you can't sleep well and have a headache. I can give you some suggestions. First, when you feel tired, you should stop studying to have a rest. Don't sleep too late at night. Second, you shouldn't drink coffee or tea before bedtime. Instead, you can do some light sports like yoga and drink a glass of hot milk. Third, if you can't get better, you should go to the doctor as soon as possible.
Yours,
Liangliang
Dear Henry,
I'm sorry to hear that you can't sleep well and have a headache. I can give you some suggestions. First, when you feel tired, you should stop studying to have a rest. Don't sleep too late at night. Second, you shouldn't drink coffee or tea before bedtime. Instead, you can do some light sports like yoga and drink a glass of hot milk. Third, if you can't get better, you should go to the doctor as soon as possible.
Yours,
Liangliang
