8-3. Thirdly, Do you have good buddies to check your movement in the pool?

8-3. Thirdly, Do you have good buddies to check your movement in the pool?
Many swimmers had bad habits that they didn't recognize. It meant that they practiced wrong ways to lead improper swimming styles.

Always I brought my son or my wife together to the pool even though they were not good at swimming.
I asked my posture or process of moving after I swam because they could look at me between departure and arrival.
Their advice toughen my swimming skills to do the freestyle stroke for 50 meters in 39 seconds.
In addition, my son had a record to do the freestyle stroke for 25 meters in 13.6 seconds when he was 13 years old. Because he had his own ideal methods after watching the waves of nicer swimmers and I helped him examine his weakness.