Sufficient funds to support him/herself

Hi Guys,
Have a quick question, if some body could answer it please.
To exercise th treaty rights for an EU citizen, one of the condition is that he/she must have sufficient funds to support him/herself .
My question is : What is the definition of sufficient funds ? How much money he/she should have to show in the account ? what should be the minimum balance in his/her account ?
Any reply, would be appreciated.
Regards

zafarzafar wrote:To exercise th treaty rights for an EU citizen, one of the condition is that he/she must have sufficient funds to support him/herself .

This isn't so.

An EEA national can exercise Treaty rights in another Member State by being an employed / self-employed person, or a student.

Only if the EEA national doesn't not fall in to one of the above categories, must he or she have sufficient funds to support himself / herself.