Depending on the drug, the effects also differ. Serious health effects may not show up until months or years later (though your body is still experiencing damage even before you start to notice obvious problems), and the extent to which the damage is reversible also depends on the drug, the amount you’ve been taking, and the number of years you’ve been taking it (our book discusses this in relation to smoking). But also, depending on the drug, one-time use can lead to overdose or serious/fatal injury as well, and within days of starting certain drugs, including nicotine, you can become addicted, which puts you in danger of years-long use.

- Hila

I still plan on writing an exercise book. I know that I said the same thing a few years back, and I meant it, but due to work and family obligations, I was not able to devote the time I needed to get things moving. Now that I have teamed up with my sister, I should be able to publish the book sometime in 2014. The book will focus almost exclusively on exercise. It will have well over 100 different bodyweight exercises, and there is a unique way to workout behind the program. I will also include push-ups, sit-ups, etc, but will note in the book exercises that have a higher potential to cause injury (e.g. sit-ups can cause lower back pain in some people).