Herbalife`s Niteworks Proven Effective in Clinical Study

Arginine Helps Older Cyclists Improve Performance
LOS ANGELES--(Business Wire)--
Avid cyclists over the age of 50 had an improvement in their performance after
taking arginine supplements for three weeks, according to a study just published
in the International Society of Sports Nutrition.

"As people age, their exercise capacity may decline - leading in turn to a
decline in overall fitness that can impact health," noted Luigi Gratton, MD,
vice president of medical affairs at Herbalife.

A group of 16 male cyclists, aged 50 to 73 years, were randomly assigned to
receive either the supplement (Niteworks; Herbalife International, Los Angeles,
CA) containing 5.2 grams of L-arginine, or a look-alike placebo and instructed
to continue with their usual cycling regimen over the three week study period.

After three weeks, those taking the supplement had an increase in their
anaerobic threshold - the point at which lactate begins to accumulate in the
blood, leading to fatigue.

"Arginine is involved in the production of nitric oxide in the body," notes
Gratton, "and nitric oxide has been associated with the improvement of exercise
performance through its beneficial effects on the vascular system." As people
age, production of nitric oxide declines, so the researchers believed that
arginine supplementation could support the production of nitric oxide and
enhance performance.

The anaerobic threshold of the study subjects was assessed both before and after
the three week study period. In those receiving the supplement, their anaerobic
threshold increased by 16.7% after one week, and held steady during the three
weeks, whereas those in the placebo group experienced no change.

"This indicates a potential role for arginine in improving exercise performance
in older subjects," said Gratton, "and improved performance could mean better
fitness and healthier lives."

NOTE: The study, conducted at UCLA and funded by Herbalife, used Herbalife`s
original formula Niteworks. The current product has a slightly different
formula, although no changes were made to the active ingredients.

Niteworks was created based on research conducted by Lou Ignarro, Ph.D., who
received the Nobel Prize in 1998 for his work on nitric oxide. Ignarro is a
member of the company`s Scientific and Nutrition Advisory Boards.

Suggested Herbalife links: Facebook, Twitter, YouTube

About Herbalife Ltd.

Herbalife Ltd. (NYSE:HLF) is a global network marketing company that sells
weight-management, nutrition, and personal care products intended to support a
healthy lifestyle . Herbalife products are sold in 72 countries through a
network of approximately two million independent distributors. The company
supports the Herbalife Family Foundation and its Casa Herbalife program to help
bring good nutrition to children. Herbalife`s Web site contains a significant
amount of information about Herbalife, including financial and other information
for investors at http://ir.herbalife.com. The company encourages investors to
visit its Web site from time to time, as information is updated and new
information is posted.

Herbalife Ltd.
George Fischer
213-745-0519
georgef@herbalife.com

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