Rank them higher. Struggle for Status, USP, Hierarchy.
"Previous research on rhesus macaques discovered that social rank influenced components of the stress response,
brain, and immune system. With gene chip technology for measuring the expression of over 6,000 different genes,
Tung, Gilad and colleagues at Yerkes, Emory University, and Johns Hopkins looked for the first time
in primates at the effects of social rank on genetic function.
Comparing 49 different female monkeys of different rank revealed significant changes in the expression of 987 genes,
including 112 genes associated with immune system function. The result fits with data in monkeys
where low rank and chronic stress lead to compromised immune function, and, more loosely,
with human studies linking low socioeconomic status and high social stress to elevated disease risk.
The overall genetic "signature" of expression changes was robust enough that researchers could predict
an individual monkey's social rank with high accuracy from their gene expression profile alone"
http://medicalxpress.com/news/2012-04-social-stress-affects-immune-gene.html