Whether the fitness tracker can help to lose weight while swimming? What are the best waterproof gadgets?
Nowadays, there are a lot of specialised devices for swimming, but I don’t know what they are exactly.
Recently I decided to go to the swimming pool in order to lose overweight. My new coach advised me to buy a fitness tracker, which can help me to achieve this goal. What is precisely the fitness tracker? Which functions does it perform?
What are the best waterproof fitness gadgets? What main qualities should it have to do well?
Do these devices really work? Which kind can you advise me to buy in 2018?