How to Estimate Healthy Portions [Infographic] Portion control is hard. No matter how diligent you are about making healthier choices and exercising, it’s still near-impossible to lose weight if your potions are out of control. On the other hand, it’s not really practical to carry around measuring cups or a food scale… So, what do we do? Here are a few tips on how to estimate calories by comparing food to your hands or favorite toys. If you like this topic and want to read more, make sure to check out our blog article on How to Estimate Calories While Taking Phentermine!