(HealthDay News) -- Everyone yawns.

(HealthDay News) -- Heel pain is usually caused by activities that continually pound the heel. Such injuries include Achilles tendinitis and plantar fasciitis.

THURSDAY, Jan. 6 (HealthDay News) -- An infectious disease association has released the first national guidelines for the treatment of potentially deadly methicillin-resistant Staphylococcus aureus(MRSA)infections.

THURSDAY, Jan. 6 (HealthDay News) -- The organs of about 8 percent of infants who suffer cardiac death in newborn intensive care units (NICUs) would be eligible for donation and could help save the lives of other infants and young children, according to a new study.

THURSDAY, Jan. 6 (HealthDay News) -- The cost of treating teenage girls with pelvic inflammatory disease (PID) in the hospital is 12 times higher than in an outpatient clinic and six times higher than in an emergency department, a new study has found.

THURSDAY, Jan. 6 (HealthDay News) -- Obese fibromyalgia patients suffer more severe symptoms such as pain, reduced flexibility and sleep disturbances than those of normal weight, a new study indicates.

THURSDAY, Jan. 6 (HealthDay News) -- Among HIV-negative sexual partners, male circumcision helps prevent the transmission of human papillomavirus from men to women, according to a new study.

THURSDAY, Jan. 6 (HealthDay News) -- Nursing home residents with serious mental illnesses are less likely to have advance care directives than those with no mental illness, researchers have found.

THURSDAY, Jan. 6 (HealthDay News) -- The longstanding practice of first giving severely wounded trauma patients intravenous (IV) fluids before bringing them to a trauma center may actually raise their risk of death, a new study suggests.

WEDNESDAY, Jan. 5 (HealthDay News) -- An in-depth investigation just published in a prominent medical journal alleges that a decade-long effort to link childhood vaccinations with autism was really an elaborate hoax perpetuated by a British doctor who has since been banned from practicing medicine in that country.

THURSDAY, Jan. 6 (HealthDay News) -- Everyone feels gut instincts at one time or another: Marry that guy! Don't take that job. Stay inside during this snowstorm! Now, a new study suggests there is indeed a link between your heartbeat and the decisions you make.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:

THURSDAY, Jan. 6 (HealthDay News) -- A newly published case history highlights the importance of rabies vaccinations for pets and animal shelter workers.

THURSDAY, Jan. 6 (HealthDay News) -- Doctors should use antibiotics and a wait-and-see approach when treating repeated throat infections in children and resort to a tonsillectomy only in the most severe cases, new medical guidelines suggest.

(HealthDay News) -- Here are the latest clinical trials, courtesy of ClinicalConnection.com:

THURSDAY, Jan. 6 (HealthDay News) -- Crying may be nature's way of telling men to give women some space: A new study indicates the smell of women's tears considerably dampens men's sexual desire.

THURSDAY, Jan. 6 (HealthDay News) -- A blood test that screens for antibodies, a protein produced by the immune system, may one day be used to detect Alzheimer's and other diseases, new research suggests.

THURSDAY, Jan. 6 (HealthDay News) -- The ability to ride a bicycle can determine whether a patient has atypical or "regular" Parkinson's disease, according to researchers in the Netherlands.