The dangers of exercising in hot conditions can increase when people compete against each other, according to a new study which says people can ignore vital warning signs. Stuart McDill reports.
00:55
01:00
00:45
01:49
00:45
01:20
01:42
01:02
02:03
00:42
00:46
01:05
00:49
00:59
01:11
01:02
01:09
01:29
00:56
00:44
01:59
01:05
01:26
00:59
01:01
01:15
01:12
01:18
00:44
01:50
01:26
00:50
01:32
01:33
00:51
01:43
01:11
01:45
01:48
02:00
01:00
00:45
00:46
00:57
02:05
01:25
01:46
01:04
02:03
02:16
01:18
01:13
00:29
02:05
00:47
01:11
01:20
01:30
00:56
01:10
02:08
01:50
01:58
01:41
01:32
02:00
01:01
01:55
02:30
01:32
01:31
01:28
02:24
01:38
01:21
01:48
01:57
02:02
01:46
01:02
01:51
01:22
01:05
01:06
01:30
01:11
01:17
01:12
01:52
00:50
01:13
01:34
02:18
01:24
01:12
01:12
00:51
01:05
01:09
01:02