1. If you are not currently using Windows XP, just skip to the next number. If you spend a lot of time doing nothing on your computer, probably you need to skip this also. Do you know what "System Restore" is? If you do, please skip to the next number. You can actually increase your harddisk free space easily. Last time I do this on my supervisor's computer, the free space increases by 3 GB. How to do it: (See your current free disk space.) Go to the Control Panel. Open the System icon. Click the System Restore tab. Tick the Turn off System Restore on all drives. Then your computer will scare you by giving a Yes/No question. Just click Yes and see how much your harddisk free space has increased...
2. If you have graduated from junior high school, you should know the Black theory that states that the heat taken is the same as heat released. And many people that have grown-up strive to lessen their body weight. That is by as much as possible getting the energy out of the body (sports etc), and as little as possible taking the energy into the body (food etc). But have you ever thought, why don't you just drink cold water? Doesn't your body release energy to heat the water to make the water's temperature the same as your body's temperature? For example if we drink 2 litres of water from the refrigerator (5°C) and the body's temperature is 37°C. So the energy we release to heat the water:
m c Δt = (2 kg) (1 kcal / kg) (37 - 5) = 64 kilo calories
That is approximately equal to 22-minutes walking or 8-minutes running. That's not bad, right?
3. Most likely you have tried to pack things into a plastic bag and tie it, but had difficulties opening the tie in other occasions. This is how you can tie it so that you can open the tie easily! But there is one condition, that you must have plastic remaining long enough because you will need one more bend on the plastic.
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