Even when I'm not at the gym, elbow pain will stop me abruptly from a mundane task, like hoisting a bag over my shoulder. It's a repetitive motion type of injury, involving micro-tears to the muscles connecting the humerus to the ulna. Muscles don't connect directly to bones but by tendons. When those tendons are damaged, they become inflamed and can compress the ulnar nerve (your funny bone).
My tendinitis hasn't become acute or chronic yet. But I've suffered such in the past when I wore tennis/golf elbow braces dutifully every time I worked out. They didn't really do anything. Standard treatment calls for rest, ice and NSAIDs such as ibuprofen. However, that does nothing to correct the problem, and ibuprofen, while a potent anti-inflammatory, is counterindicated for strength-training. Standard treatment also does not allow you to return to the activity that probably caused the problem in the first place.
Online, there are a lot of purported experts claiming to know how to fix your golfer's elbow. But because everyone is different, not everyone will respond to the same treatment the same way. Most treatments include stretching and some also advise foam rolling or massaging down the forearm. The most common type of stretch involves holding your arm straight out in front of you, with palm facing up, then tip your fingers downward which will stretch the inside of the forearm. What we all want to avoid is surgery. And steroid injections.
The other recommendation is, of course, to strengthen all the muscles affected by this tendinitis, i.e., forearms and hands. I do Reverse Grip BB Curls once a week. I suppose I could add wrist curls but I've never found them to be effective for strengthening forearms. I worry that I'll just be adding more stress to my repetitive stress injury.

Another Cardio Wednesday
Norwegian 4x4
5 min w/u (4 min on / 3 min off) x 4
5, 9, 12, 16, 19, 23, 26, 30, 33
Calories 283
Miles 2.62
HR 135-186 (80)
Cage Stretch
HGPU 21
Push Ups 50
Crunches 30/30
Leg horizontal scissors 50
Bicycles 50
Side Planks 2 x 60s
Bird Dogs 2 x 60s
20 Expresso Bike
Dragons Island
Calories 66
Miles 3.28
Points 173,090
HGPU 20
20 Step Mill
Level 3
Calories 112
Total steps 705
Floors 44
HR 126
Push Ups 60
Mat Stretch