Punching in to lose weight refers to recording the daily situation in the process of losing weight, which often includes information such as diet, exercise and weight. There are many ways to save the weight-loss punch card, and the common methods are:

Print it out and put it on the desk at home or in the office.

Use spreadsheet software such as Microsoft Excel and Google Sheets. This can be viewed and edited at any time on computers and mobile phones, and can also be easily backed up and shared.

Use special weight-loss punch-in software or websites, such as MyFitnessPal, Lost It, etc. These softwares or websites provide special interfaces and functions, which make it easier for you to record and analyze your weight loss.

Which way to choose depends on your preferences and needs. Different methods have their own advantages and disadvantages. You can choose the method that suits you best according to your own situation.