There is this organisation called Habitat for Humanity. They get volunteers to build proper for houses for those who can't afford it. I signed up to go on 1 such trip recently. I will be going to Batam in February to help build a house for the poor.

Before going, we have to take some immunisation jabs. 1 of it is the Tatanus jab. I was told that the validity for it is 10 years. So if we had taken 1 during the past 10 years, we don't have to take it again. I remembered I had taken it during army time, so I am safe there.

Then I realise that army is more than 10 years ago...