Be advised, I am NOT a physician merely someone who in his own leisure has studied many conditions of the heart due to my own risk factors.
The answer to your question still can't be clearly defined until you provide us with just a little more info.. But trust me this is a great board and you will get the help you need if you provide us with ALL the necessary information. I will provide as much help as possible but I need a little more info as to the specifics of your "heart nature" as you put it and more info as to your stats.
I need to know:
A) Age:
Height:
Weight:
BF%:
Diet:
Training Experience:
B) MVP has many diagnosis which were you actually diagnosed with? (Classic, Non-classic, Asymmetrical, Symmetrical etc)
C) What are your symptoms? (they vary in severity)
D) Lastly, MVP is sometimes associated with additional complications and risk factors such as: EDS and Marfans Syndrome have you ever been diagnosed with these or any other conditions?
Honestly given the amount of information you have provided us with thus far and the nature of the condition the answer will most likely be no as most doctors here in the US don't even advise weight training for sufferers of MVP in excess of 50 pounds, but rather would advise light cardiovascular exercise a few times a week. But at the same time hope is not lost altogether as 10% of cases are benign and carry little risk. That being said please just remember man, we only get one body and one life. Play it safe.
More information from you = More answers from myself and the rest of the board.