Studies show 15 minutes of daily exercise can help

I wonder if sex counts?

If your partner lasts longer than 15 minutes Jgal then I would say that falls in line with the current research.

Regular strength training and aerobic exercise are very important to physical and mental health but it always shocks me to see how out of shape the general public is, both in Japan and the United States. I don't understand why people don't get motivated to exercise after their body hits a certain point of out-of-shape-ness.

In order to qualify lovemaking as a cardio workout, you must raise your heart rate for an extended period of time, usually 20 to 30 minutes. It works all of the major muscle groups, and you should find yourself sweating and breathing during the most intense part of the workout. Unfortunately, sex does not use major muscle groups. Although you may be breathing hard during sex, this isn't necessarily because your heart rate is up. It has to do with your hormones and what's going on with your nervous system. Cardio must reach a specific level of intensity and sustained about 60 to 85% of your max heart rate. Therefore if you feel that your sexual activity meets all these requirements, then you could probably count it as cardio. Hence it's important that you distinguish that not all activities are a workout.

Come on 20-30 min for love-making is short if you don't get better .....

Back on topic. Having a few shorter workouts each day are more beneficial than one single one at the wrong time.

@Novenachama that was very informative, thank you. So doing the dishes and cleaning the house would not be a workout. Because I am so physically active with daily activities, I didnt think that I needed to be including extra workouts, but now I do.