The biggest hurdle they're facing is their habituation to risks: all the physical, detectable and emotional functional changes that drive and control and influence their over-the-top risk-taking.
El mayor obstáculo que enfrentan es la habituación a los riesgos: todos los cambios funcionales físicos,  detectables y emocionales que conducen, controlan e influencian su deseo desmesurado de correr riesgos.