I was actually cutting so I was bulky to start so I had all these problems in reverse.

#1 I had to start stretching every morning while I drank my coffee. 15-20 minutes of light to medium stretching if you aren't flexible is going to be a must.

#2 Boxer briefs and baby powder but you can't really fix it totally unless you basically Vasoline down your thighs.

#3 Cardio Rotations. I'm actually having problems now because that muscle that runs along my shin will get too pumped if I try and hike or run. What I do now is jump a little rope, punching bag, jumping jacks, just keep doing a mix of things that hit different muscle groups so the pumps wont get too bad.

ncspacy also said tabata was awesome but I haven't gotten to try it yet. With 20 seconds on, 10 seconds off, if you go upper body then lower body you might mix it up enough to let the different pumps subside.