Follow these tips and start progressing today!
Training
Endurance training for better cardiovascular resistance and so you can swim for longer. Make sure to dedicate some trainings to a stronger core as well.
Nutrition
Make a list of foods to avoid before training in the water. Dairy products and foodstuffs with a lot of fat or fibre can make you feel sick and cause alterations in your digestion and intestinal function.
Supplementation
Use supplements according to your needs. As water sports are generally not ideal for muscle development, a solution for building and maintaining muscle mass could be to add a protein supplement to your diet.