Is it possible to hold your b. for a very lengthy time

1 min 24 secs

5 mins 1 sec

6 mins 52 secs

5 mins 14 secs

5 mins

5 mins 12 secs

8 mins

5 mins 8 secs

5 mins 10 secs

5 mins 12 secs

5 mins 10 secs

5 mins 13 secs

5 mins 8 secs

5 mins 7 secs

5 mins 6 secs

5 mins 12 secs

5 mins 9 secs

5 mins 8 secs

5 mins 9 secs

5 mins 6 secs

5 mins 6 secs

5 mins 12 secs

5 mins 6 secs

5 mins 14 secs

5 mins

5 mins 22 secs

5 mins 14 secs

5 mins 11 secs

5 mins 14 secs

5 mins 6 secs

5 mins 12 secs

5 mins 9 secs

5 mins 10 secs

5 mins 8 secs

5 mins 7 secs

5 mins 9 secs

5 mins 11 secs

9 mins 9 secs

7 mins 19 secs

5 mins 27 secs