Study: NCT05317754

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Mindful breathing
Description: * Formal practice should take 30-60 minutes/day. It can be divided into as many as 4 sessions/day at times of participants' choosing, but the recommended times are after waking up in the morning and before going to bed at night.~* There is no limit to the number of times informal practice can be performed during the day.~* Use of a diary is necessary to record the time and duration of all formal and informal practices.~* The intervention will have a duration of 60 days. During this period, participants are to take part only in the intervention to which they have been randomized and no other. After this period of time and during the follow-up, participants will be able to practise any kind of meditation and at times of their choosing, but this information must always be recorded in their diary.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: Prostrations, according to Tibetan Buddhist tradition
Description: * Formal practice should take 30-60 minutes/day. It can be divided into as many as 4 sessions/day at times of participants' choosing, but the recommended times are after waking up in the morning and before going to bed at night.~* There is no limit to the number of times informal practice can be performed during the day.~* Use of a diary is necessary to record the time and duration of all formal and informal practices.~* The intervention will have a duration of 60 days. During this period, participants are to take part only in the intervention to which they have been randomized and no other. After this period of time and during the follow-up, participants will be able to practise any kind of meditation and at times of their choosing, but this information must always be recorded in their diary.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: The Koan Mu, according to Zen Buddhist tradition
Description: * Formal practice should take 30-60 minutes/day. It can be divided into as many as 4 sessions/day at times of participants' choosing, but the recommended times are after waking up in the morning and before going to bed at night.~* There is no limit to the number of times informal practice can be performed during the day.~* Use of a diary is necessary to record the time and duration of all formal and informal practices.~* The intervention will have a duration of 60 days. During this period, participants are to take part only in the intervention to which they have been randomized and no other. After this period of time and during the follow-up, participants will be able to practise any kind of meditation and at times of their choosing, but this information must always be recorded in their diary.

Intervention type: BEHAVIORAL
Group type: EXPERIMENTAL
Intervention: The mirror exercise, according to Toltec tradition
Description: * Formal practice should take 30-60 minutes/day. It can be divided into as many as 4 sessions/day at times of participants' choosing, but the recommended times are after waking up in the morning and before going to bed at night.~* There is no limit to the number of times informal practice can be performed during the day.~* Use of a diary is necessary to record the time and duration of all formal and informal practices.~* The intervention will have a duration of 60 days. During this period, participants are to take part only in the intervention to which they have been randomized and no other. After this period of time and during the follow-up, participants will be able to practise any kind of meditation and at times of their choosing, but this information must always be recorded in their diary.