Swimming relies on the natural buoyancy of the human body. On average, the body has a relative density of 0.98 compared to water, which causes the body to float. However, buoyancy varies on the basis of both body composition and the salinity of the water. Higher levels of body fat and saltier water both lower the relative density of the body and increase its buoyancy.
Since the human body is only slightly less dense than water, water supports the weight of the body during swimming. As a result, swimming is "low-impact" compared to land activities such as running. The density and viscosity of water also create resistance for objects moving through the water. Swimming strokes use this resistance to create propulsion, but this same resistance also generates drag on the body.
Coach is someone, not quite your parent or your best friend or even your number one role model, who is there throughout your swimming career, and maybe even longer. Coach has seen you through your worst days and best, witnessed your 5 a.m. mental breakdowns and 5 p.m. final swims. Regardless of the type of relationship you have with your coach, he or she is who you have the most contact with throughout the sport. Every interaction, whether it’s just in passing before a race or a long, sit-down goal meeting in the office, is what shapes your swimming career.
Thanks for this definitive guide, I don't know why but I was always afraid of water. till this day when I see huge water massive, I am scared as hell, Hope I will overcome this, Thanks
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