tag:blogger.com,1999:blog-9090954006475363744.post-24026422916387696982007-10-30T12:04:00.000-07:002007-10-30T12:04:00.000-07:00I suppose you can do it by interval training instead of taking break if you are short of time. Eor example try intense running for few seconds followed by moderate running for another few seconds.Anonymousnoreply@blogger.com