Coherence techniques of SOMA and gentle breath holds which do not cause hypoxia are safe to be to be used for anyone. And can be beneficial for SL individuals. 

IHT therapy (kumbaka) in SOMA is contra-indicated, in the case of:

• Acute illness
• Epilepsy 
• Severe lung disease 
• Terminal Cancer 
• Patients with pacemakers or heart arrhythmias.
• Pregnancy

Some conditions which maybe aggravated by IHT include and careful attention to technique must be paid.  Eg: Tinnitus 

Conditions where hypoxic IHT maybe used if your doctor has agreed to include it in your treatment plan:

• Ischaemic heart disease
• Cancer