Hi,
With our APIs you can build a simple plugin that do this (docs with example plugin at 
http://docs.easy-profile.com/index.php/article/triggers)
- Download, Install and Enable Skeleton Plugin (you will find it at 
http://docs.easy-profile.com/index.php/article/triggers)
- Open file /plugins/jsn/skeleton/skeleton.php
- remove samples functions: triggerFieldAvatarUpdate, triggerProfileUpdate
- add function like this:
public function triggerProfileUpdate($user, &$data, $changed, $isNew)
	{
		if(!$isNew && in_array( 'your_field_alias' , $changed ) )
		{
                        // Start body of email
			$body=$user->name." updated user profile. \n\n";
                        // Add fields to body email
			foreach($changed as $fieldalias){
				$body.=$fieldalias .": ". $data[$fieldalias] ."\n"; 
			}
                        // Send Email
			$result=JFactory::getMailer()->sendMail(
				$user->email,						// Sender Mail
				$user->name,						// Sender Name
				'here-your-admin@email.com',			// Receiver Mail
				'Profile Updated',				// Subject Mail
				$body	// Body Mail
			);
		}
	}
NOTE: 
This code is not tested and not supported, this is only for example purpose.