New physics extensions usually have many new parameters that can be tuned in order to be compatible with current data. In many cases, instead of ruling out the models we are just able to find constraints on their parameters. How to find these constraints, including as much information as we can, is usually challenging due to the huge amount of measurements that exists. In this seminar we will see how to perform a global fit of some new physics extension using one of the most interesting packages available in the market, HEPfit.