However, withdrawal from caffeine is seldom dangerous, though it can make one uncomfortable for a few days. The most frequent symptom associated with this withdrawal is a moderate to severe headache. This can occur between 12 and 24 hours after last intake of caffeine.
Okay, for step one you need to get the command blocks in your inventory. Make sure you have cheats ON and say /give (player name) command_block. After you get in in your inventory place 5 in a row.
You can use this command to place lots of blocks in a certain area instantly. To use this command, follow these steps: Go to a corner of the area you want to fill. The Fill command affects blocks in a box-shaped region, up to 32,768 blocks in volume. Pick any of the 8 corners of the box you want to fill.