About plank exercises results of 1,836
56:52
17:59
34:54
15:00
09:05
11:37
12:08
10:27
09:46
10:41
13:56
14:27
08:34
13:48
10:56
10:01
14:28
11:43
12:55
12:26
13:35
13:57
10:22
08:59
12:06
09:50
11:29
12:33
10:01
18:20
17:14
85:49
42:28
43:09
50:35
34:02
31:42
31:49
14:06
12:09
10:24
13:56
12:09
13:31
08:26
13:30