I have a couple of stories related to this. When I was doing triathlons, I was also looking for ways to increase my endurance. After I started taking growth hormone, I noticed that I recovered faster from intense workouts and could maintain the desired pace for longer. If you are interested, you can buy HGH from this site. It definitely helped me move forward in my training, and I am glad I decided to try it. I hope it will be useful for you!