The meaning of exercise

A situation that is seen as law of effect is having good smelling food in the kitchen. This affects you as you walk by and would like to go back multiple times as the law of effect states that the response produces a satisfying effect on the person in this particular situation. Let's take another example such as going to the gym. As someone goes to the gym they have a certain stimulus and response that changes their behaviour. This stimulus and response cause this person to frequently go to the gym for multiple reasons such as it makes them forget about their problems, makes them feel fit, helps with certain motions etc. This is the law of exercise which is having strong behaviour through frequent responses. These laws are not like law of gravity or boyle's law. Those laws can be tested and have been tested for hundreds of time. It is a certain aspect during this period that those are still correct. Those laws also do not take account a lot of variables as the laws of exercise and effect do. Laws of exercise and effect have the a lot of variables which is the human brain. As we are not certain how it fully functions, leads us to have missing information and other variables. For example someone can go to the gym and just post a picture on social media to get the satisfaction/effect they were looking for. Their intention and outcome can be different but results are the same. As for law of gravity we can expect to jump and come back down but we can not expect to just fall every time we move or have gravity increase for certain way. This law has consistency which the others don't. It is also simplified that there is a force acting on us at all time. Therefore i believe these laws can not truly be compared since they are observing to very different subjects. The outcomes will be different and the human brain can not be simplified as gravity.