Physical exercise takes one of two forms: dynamic exercise such as running
or cycling and isometric exercise such as heavy lifting or sustained handgrip.
Carrying a heavy suitcase is a typical example of isometric exercise. Most blood
pressure-lowering drugs are ineffective in preventing the rise of blood pressure
during isometric exercise. Dynamic exercise is safe for most patients with high
pressures and may even be beneficial but is probably sensible to avoid excessive
isometric exercise such as heavy lifting.