But only in moderation at first.
Everyone here has given you good solid advice BUT [that nasty word?] there can be limits on what you can and can't or shouldn't do depending on IF your PN is really diagnosed and how bad you have it.
That said, another factor should be how long you've been essentailly 'laid up' with it and out of any action. The longer you have not 'done' anything the harder it is to get back to any kind of 'normal'. So how long you've not been up to 'par' and to what degree should be your barometers as to how soon any exercise can and should help.
One thing about many PN's as you've probably read is that sometimes, overdoing it can do damage. A very reasonable fear! How does one know when one has/is going too far? Well, I can't speak for others but in my own experiences, one of several things can occur..sometimes with a sort of warning and others a big WHOMP! = I am stuck!
Symptoms for warnings to STOP NOW and go no further for me are: Sudden heaviness in my legs, super sudden numbness in the legs/feet and hands, total lack of connection between the legs/feet or hands to the way you want them to go and worst is a very sudden onset of sleepiness. You really have to learn to listen to your body..Do NOT let any enthusiastic PT person tell you to do more once you feel that heaviness/fatigue set in! Ever. That is your limit for THAT day. IF you do more? You will probably hurt. But, if you go slowly and switch off on exercises and do them in small bits during a day and build up slowly [again] I bet you will find that that sort of 'gentle' interval exercise can truly help. I for one went thru 2 rounds of PT at an office then got smart and realized that most of what I needed to do I could do at home. My next round of PT I specifically asked my doc [writing the orders] to specify a HOME program-giving me the things I needed to do at home that can continue to help me after PT is over. I got my theraband, hand weights, ankle weights, and a few other things and can do the basics I need to get and keep myself going. BUT IF you are into more active things...I would seriously follow Cycleops advice. Key to it all is to listen to your own body, nerves and muscles! Don't overdo at any one time...It shall come with well, a 'temperance'.
My goals still? After four plus years are to walk a mile w/o a cane and w/o pain afterwards and to be able to do my 'thing' ride horses again for hours on end... Last time I tried? Only lasted about 30 minutes and I paid for it for days! Actually the worst parts were the driving to and from where I had to go to ride! I was soo tired after slept for 2 days! But, I truly hope you don't have the kind of PN I have! So, don't let that put you off? Just be cautious.
Go, go cautiously and go smart. IF you have been as active as I suspect, I believe that Cycleops can help you get back to somewhere near where you were...IF you don't get worse when starting to hit the limit.
This stuff hits us all in very different ways. That doesn't mean you have to crawl into a hole and have a pity party...Tho at times we do and should. Just know that there are folks who've lots of experiences here who could help.
's - j