Is going jet skiing 4 months after breast augmentation ok?

Consult with your surgeon about the types of activities that are acceptable post-surgery. It is important that you not engage in strenuous activities in the first three (2-3) weeks after surgery. My own personal recommendations to my patients are start walking as much as you want to, as soon as you want to. Then progress as desired to high-reps, low-resistance exercises. Slowly progress for 6 weeks, after which time there are no restrictions. I advise my patients to refrain from strenuous physical activity such as heavy lifting with your arms or jogging for 6 weeks. Aerobic exercise will raise your blood pressure, which could cause late bleeding and harm your result. Once you begin exercising again, start gently and let your body tell you what it can tolerate. Don’t rush!! It is important that you follow your doctor's instructions so that you get the best aesthetic results. #breastrevision #breastimplants

Patients can return to  running and exercising after 3 to 6 weeks after a breast augmentation surgery. It's best to be sure that everything is healed. There is always a chance of causing bleeding if you start much before that time. After 4 months there shouldnt be any problem to go jet skiing. When you start, listen to your body. You will be a little out of condition and a bit sore. But you will get back to where you were before surgery very quickly.

At this point, you should be just fine.  Barring any major trauma ( that would cause bleeding around the breast implants), jet skiing should not in any way increase risk of encapsulation.  Be careful and have fun!