Tiredness on the workstation

You are sooo tired and nerveless but you must keep working. You know the situation? Here are a few tips they help you to avoid the tiredness:

• A important condition is that you are well-rested!
• Dont drink too much coffee (otherwise you get a tiredness-effect)
• If you have a office-job: to do gymnastics every few hours
• Go and get some fresh air

You know any other tips? Please leave a comment.