Some links:
http://www.ncbi.nlm.nih.gov/entrez/q...&dopt=Abstract
CONCLUSION: Exposure to static magnets for up to 30 minutes had the same effect on resting forearm blood flow and vascular resistance as placebo magnets. These data suggest that static magnets do not result in significant alterations in resting blood flow.
http://www.ncahf.org/digest02/02-38.html
Magnet study contradicts "increased circulation" claim.
http://www.stats.org/record.jsp?type=oped&ID=51
Magnet therapy? Puh-leeze