Final answer:
It is good to stick to a new exercise for a month because it helps in establishing the exercise as a lasting habit, which is beneficial in creating a sustainable health routine.
Step-by-step explanation:
Sticking to a new type of exercise for a month is beneficial because it is long enough to help establish the exercise as a habit. This period is not necessarily about losing a lot of weight quickly, nor is it because exercise classes require a month's commitment, or because switching exercises monthly is advised. The focus is on creating sustainable patterns of physical activity that contribute to lifelong health maintenance.
Moreover, most scientific studies indicate that successful weight loss is accomplished by combining a change in diet with an increase in physical activity. To achieve and sustain weight loss, it is crucial to engage in physical activity most days of the week and to establish a routine that can be maintained over the long term.