For “bed sports”, “time” seems to measure whether a man is a man.
If you have trouble getting or maintaining an erection, this is called erectile dysfunction（ED）, which often affects the emotional health of men and their partners.
Also, you may not get an erection after orgasm, or find it difficult to get another erection for a while. This is a normal phenomenon called a refractory period. Taking Viagra can reduce this time to allow for longer periods of motion in bed, in other words, you can have sex again sooner after orgasm.
It is worth noting that Viagra is only used to treat erectile dysfunction.
If you need help staying in bed longer for other reasons, you may need another treatment.
Other reasons people may need help staying in bed longer include:
premature ejaculation
low libido
low stamina
Viagra can’t treat these.
Viagra is not intended to treat premature ejaculation.
There are many reasons for premature ejaculation, such as high psychological pressure, high sensitivity, and so on. Insufficient blood flow to the penis does not cause rapid orgasms, so Viagra is not an effective treatment for premature ejaculation.
Viagra can’t make you more excited.
The function of Viagra is only to help you get a natural erection when having the urge. If you have no impulse stimulation after taking it, you will not get a natural erection even if sitting for a night.
Viagra doesn’t make you bigger and harder
Studies have shown that “Viagra” can improve the hardness of an erection and prolong the latency time, but for regular people, the hardness of the erection will not change much.