If you want to be a tough guy, you have to read this (adult novel about sex knowledge)

Regular exercise can keep us in better physical shape, and the same is true for sexual endurance. During sex, men are generally (but not always) more active than women in positioning and movements. For this reason, the following exercises will help you get your body into good shape to achieve a more perfect sex life.
Important areas of muscle activity from top to bottom for sexual harmony include:
Shoulders (for a better hug), abdomen, hips, and groin (primary areas for sexual activity).
1. This set of movements for shoulders is not only for increasing the strength of the shoulders (weightlifting and pull-ups can do this), but also for increasing flexibility. Flipping and rolling in bed requires flexibility in your shoulders, up and down, left and right. For best results, extend your arms straight in front of you, grab your left wrist with your right hand, and stretch your arms above your head, pushing slightly back until you feel a slight pull in your armpits. Hold this position for 5 counts, then relax your arms and repeat one or two more times.
2. Abdomen The abdominal muscles may be the most important muscles for men when making love. The most commonly used sit-ups strengthen the abdominal muscles. Lie on your back with your knees bent and your arms crossed over your chest or clasped behind your neck for support. Slowly lift your head and shoulders so that your shoulders are 4 inches off the ground. Hold this position for 3 counts, then relax and repeat as many times as is comfortable for you. Gradually increase the number of times according to your personal practice situation.
3. The key point of hip and groin exercises is flexibility, not strength. The following two exercises can help achieve this goal.
First exercise. Sit on the floor with your feet together, legs bent, knees apart, and elbows between your knees to reach your ankles. Then hold your ankles and touch the soles of your feet together, bend your body slightly forward, and use your elbows to support your knees, slowly pressing your knees to the floor. When you feel a stretch in your groin, stop and hold this position for a few seconds. Relax and repeat this movement 2 to 3 more times. When doing this move, make sure your movements are very gentle.
The second exercise. Sit cross-legged, lean your body slightly forward, and stretch your arms forward as far as possible. When you feel a stretch in your groin, gently bend forward one or two more times. Relax for a while and repeat the above steps 2 or 3 times.
4. Kegel exercises
Dr. Kegel first developed this exercise in the 1940s to help women increase bladder control. These exercises can also help men achieve erections, more frequent and intense orgasms, and greater sexual enjoyment.
This set of exercises mainly trains the muscles that control urination. There are three basic exercises with simple steps and they are not difficult to perform.
The first exercise: Imagine the feeling of starting to urinate and then stopping. You can feel the muscles deep in your groin tightening. Continue this way and count to 3. After practicing for a while, you can increase the count to 5. As you progress easily, you can increase the count to 10.
The second exercise. Tighten and relax this muscle as quickly as possible.
The third exercise. Imagine squeezing out a few drops of urine after your bladder is empty. At this time you will feel your abdominal wall tightening as well.
Repeat each of the above exercises slowly 10 times, about 5 times a day. After a while, you will feel more sensitive and it will be easier to control your orgasm. Some people can achieve longer-lasting orgasms through these exercises.
The above are some tips for training your body muscles to express love, and it’s up to you to decide what to do.