Improving Cardiovascular Endurance

Cardiovascular fitness can be improved by the FITT principles. From frequency to timing, techniques you can boost your health and your endurance. Learn more about FITT and cardiovascular health with these tips.

A New Chapter for DAN and the Dive Community

Stepping into the role of president and CEO of Divers Alert Network is both an honor and a responsibility I take seriously. For more than four decades DAN has been a trusted partner to divers around the world, providing medical guidance, emergency assistance, scientific insight, and peace of mind.

Cliff Richardson

Mitral Valve Prolapse

Mitral valve prolapse (MVP) occurs when the mitral valve doesn’t close properly. Individuals with MVP should consult healthcare professionals and assess risks before diving, as increased pressure can place additional strain on the heart.

Mitral Valve Prolapse Patient talking with her doctor during a cardiopulmonary stress test on a hospital

DAN’s 2025 DEMA Show Recap

At the 2025 DEMA Show in Orlando, DAN demonstrated our commitment to serving the diving community as your dive safety association.

DAN staff in front of DAN's tradeshow booth at DEMA Show

DAN at DEMA Show 2025: Connect With Us

Join DAN and your fellow dive industry professionals November 11–14, 2025, at the Orange County Convention Center West in Orlando for DEMA Show 2025. DAN will exhibit in Booth #621 and offer seminars, meetings, a members-only social event, and other opportunities to connect with our mission and team.

DAN Booth at DEMA Show

DAN at DEMA Show 2025: Member Guide

Join us November 11-14, 2025, in Orlando for another exciting DEMA Show. Connect with DAN’s mission and team, as well as your fellow members, through engaging seminars, meetings, a members-only social event, and more.

Orange County Convention Center

2025 DEMA Show

DAN IS HERE FOR YOU  Since 1980, DAN has worked tirelessly to promote dive safety — operating the 24/7 DAN Emergency Hotline, conducting dive medical research, and collaborating with stakeholders […]

Jump Rope Training

Jump rope training is a powerful full-body cardiovascular workout that builds muscular endurance, coordination, and breathing efficiency. Jumping rope strengthens calves, stabilizes ankle joints, and improves core stability, allowing finning with greater ease. It also requires focus and stimulates your brain.

man jump roping

Diving with Type 1 Diabetes

Q: I was recently diagnosed with type 1 diabetes and will now require insulin. Will I be able to dive again?

Woman giving herself an insulin shot