It takes 3 to 6 months for fitness to be effective, because it takes a long time to activate the muscle tissue of your body. Only long-term exercise and a certain degree of exercise intensity can ensure that your body is used to those fitness trainings and has certain effects.

Fitness is never an immediate thing. It is always a long-term exercise. Only long-term persistence can achieve the little effect you want, even if there is a little effect, you can't stop. Instead, you should adjust the time and intensity according to your physical condition, so that your previous fitness exercise will not be in vain.

So fitness has always been a long-term activity. You can try to develop these fitness exercises into your own habits, which will not only achieve the desired results, but also make your life more self-disciplined and happier. Fitness can completely achieve these effects, and only persistence can have an effect.