How to lose weight while pregnant<br>Do not try to diet while pregnant. You should never try to lose weight while pregnant unless your doctor specifically tells you otherwise. Do not start a weight-loss regimen after you find out that you are pregnant.
Can we infer the following?
Do not try to diet while pregnant is the rule of thumb

Available options: 1. Yes; 2. It's impossible to say; 3. No;
The answer is:
1.