Key points from article :
Inspiratory Muscle Strength Training is strength-training for the muscles you breathe in with.
IMST involves breathing in vigorously through a hand-held device which provides resistance.
It was developed in the 1980s as a means to wean critically ill people off ventilators.
2016 study looked at sufferers of obstructive sleep apnea, who tend to have weak breathing muscles.
With just 5-minutes breathing exercise per day, blood pressure dropped 12 mmHg after six weeks.
Time-efficient exercise can be done quickly in the home or office.
CU Boulder researchers have launched a clinical trial to learn more about IMST's effects.
