The army's FFPs unit recruits new FFPs each month who received a twelve-month contract comprising of a six-month induction program (1st month to 6th month) and a six-month active duty period (6th month to 12th month). Within our study, volunteers will be included at the 4th month (baseline measurements after the first four months of training), in order to avoid the high drop-out rate that occurs during the beginning of this period. Included participants will be randomly assigned (computer-generated randomization) to one of the three following groups: TOP, HC, or control, and the stress managements programs will occur during the last two months of induction program (4th month to 6th month). The two stress managements programs will be taught by an experimented psychologist, with daily requirements of short practice tasks. All three groups will receive a pharmaceutical placebo in order to control any placebo effect. The placebo will comprise of starch concealed in a capsule, and was required to be consumed between the 4th month and the 6th month.