In this pilot study the investigators test the hypothesis that gastric motility can be measured with an intragastric balloon.

Inclusion Criteria:

• They are between 18-60 years old.
• Male and female.
• Patients must provide witnessed written informed consent prior to any study procedures being performed.

Exclusion Criteria:

• They are older than 60 years old.
• Have severely decreased kidney function.
• Have severely decreased liver function.
• Have severe heart disease, for example a history of irregular heartbeats, angina or heart attack.
• Have severe lung disease.
• Have severe psychiatric illness or neurological illness.
• Have any gastrointestinal disease.
• Have any dyspeptic symptoms.
• Women that are pregnant or breastfeeding.