Muscle measuring and flexing

5 mins 10 secs

6 mins 46 secs

13 mins 24 secs

2 mins

3 mins 2 secs

2 mins

10 mins 37 secs

2 mins 49 secs

1 min 5 secs

8 mins

6 mins 10 secs

1 min 57 secs

22 secs

1 min 40 secs

4 mins 17 secs

14 mins

17 mins 37 secs

3 mins 36 secs

16 mins 31 secs

7 mins 19 secs

6 mins 14 secs

7 mins 3 secs

12 mins 18 secs

9 mins 43 secs

2 mins 28 secs

25 secs

1 min 53 secs

2 mins 1 sec

4 mins 59 secs

9 mins 30 secs

9 mins 7 secs

12 mins 22 secs

6 mins 42 secs

5 mins 3 secs

3 mins 39 secs

5 mins 48 secs

4 mins 9 secs

2 mins 16 secs

6 mins 31 secs

4 mins 23 secs