I believe there is reduced lung function in those with a BMI of over 30...probably due to the restrictive effect of the enlarged abdomen. I know that i have found this a problem when doing inverted posture in yoga! Best wishes, Diane _________________________________________________________________ Use MSN Messenger to send music and pics to your friends http://www.msn.co.uk/messenger ~~~~~~~~~~~~~~~ Please remove this footer before replying. For list archives and documents, go to http://www.jiscmail.ac.uk/lists/occ-health.html for list archives For jobs in Occupational Health, go to http://uk.groups.yahoo.com/group/OHJobs/