Cardio? Absolutely! Upper-Body Weights? It Depends!
If you have Tennis Elbow or Golfer’s Elbow you can certainly continue with your cardio exercise and lower-body work out (that’s probably obvious and uncontroversial!)...
The real question is: Should you continue to lift weights or do upper body strength training? (With or without weights or equipment)
It depends on how severe your injury is, naturally - But it also makes a big difference HOW you developed your Tennis Elbow...
Here's The Full Post On Working Out Wisely With Tennis Elbow
Here's the "Working Out Wisely With Tennis Elbow" Podcast
And the video on YouTube