Warning

The following are not allowed to practice the Meditation on Twin
Hearts:

(1) Persons below 16 years old.
(2) Patients with severe heart ailment, hypertension, glaucoma, or kidney and liver problems.
(3) Pregnant women.
(4) Heavy smokers.
(5) Heavy meat eaters (particularly pork).
(6) Persons with excessive alcohol consumption or use of addictive and hallucinogenic drugs.

Doing this meditation can have adverse effects to the people with the
preceding conditions. People with the above qualifications who insist
on practicing the meditation do so at their own risk.