It's mainly okay to fast and exercise simultaneously, "especially if you're a healthy individual with no history of problems," Stanford University, MD and physician professor William Dixon, says. But some individuals do need to be careful.
Populations with a history of coronary artery disease and individuals who take any heart medication must be cautious. Especially those who have high blood pressure and people with diabetes are also at risk.
Fasting Type And How It Interacts With Exercise
An important thing to remember is that not all fasts are the same. Some are only hours, while in extreme cases, they last weeks. Ramadan is one of the most common examples of fasting. It is a month-long fast in the Islamic population. During this month, they may only eat and drink at a set time, according to the Academy of Nutrition and Dietetics.
Other forms of fasting are typically for dietary reasons and are to lose weight. Intermittent fasting is the most popular among these types of fasting.
Intermittent Fasting
Individuals who partake in intermittent fasting must be careful as it sometimes doesn't mix well with working out. Specifically, fasts that last more than 24 hours are a no-no with exercise. These fasts deprive the body of calories and hydration, including not drinking water.
It isn't safe in most examples and can have a detrimental effect on the individual who tries intermittent fasting and working out simultaneously.
Tips for Working Out if You're Fasting
Even if an individual does take every measure, working out while on a fast can sometimes be dangerous. People taking medication and fasting should be extra careful when exercising. People with prior health conditions aforementioned are also at risk.
Before working out, individuals must be extra careful and consult a doctor before trying fasting and exercising. Always try to be safe while fasting and know your body's limits. Don't make it a long session. Relatively low-strain workouts can make for high-strain activities if they go on long enough with a body already tired from fasting. Walking, for instance, seems very low intensity. But as soon as it lasts for too long, the body starts to struggle.