What kinds of alarm clocks are good for heavy sleepers?

As of 2014, there are many alarm clocks that feature different functions to rouse heavy sleepers. One such function requires the sleeper to perform bicep curls before it turns off. One clock uses high-decibel alarms that are as loud as jackhammers.

On some clocks, high-decibel noises can be as loud as large power tools. Other people who don't have trouble hearing alarms but have trouble getting out of bed benefit from an alarm clock that requires the user to complete a task before it can be turned off. One such clock actually rolls off the nightstand and hides in different places throughout the room while continuously beeping. The alarm shuts off only after the user rises from bed and finds it.