What should you not do after scuba diving?

There are many things divers avoid right after surfacing, especially in the first 30 minutes while the body is still off-gassing nitrogen. This answer focuses on what to avoid after a normal surface interval of about 30 to 60 minutes, when you’ve had time to rinse gear, hydrate, and relax a bit.

By Tyler AllisonUpdated December 6, 2025

After diving, you should not fly, go to high altitude, or do any activity that causes heavy strain or rapid changes in pressure. Air travel, mountain driving, or strenuous exercise can make it harder for your body to release nitrogen safely and increase the risk of decompression sickness. It’s also smart to avoid alcohol or hot tubs for several hours because both can speed up circulation and alter how gases leave your tissues.

Think of post-dive time as recovery. Keep moving lightly, stay hydrated, and let your body return to normal pressure before adding new stress. Most divers wait at least 12 to 18 hours before flying or heading into the mountains.