Worgen in human form 
Are worgen just regular humans in human form?
That is a really good question! And I really wish there was more on it, but there is some. Are worgen in human form just regular humans? Well, yes, and no.
Spiritually, worgen are worgen. The worgen soul is worgen, seen by numerous worgen ghosts, and the worgen body returns to this form when they are slain. The resistance to undeath is retained in either form, as well as their amplified connection to nature. But so too does their magical weakness - Wolfsbane - matter in both forms, as you see the worgen in Northrend in human form require you to remove the wolfsbane plants because they cannot.
Mentally, worgen in human form aren’t entirely human in mind either. The best quote to describe this is Belysra Starbreeze, who says “Your feral side will never truly be at rest. When you are driven to anger, or concentrate with a force of will, the animal within you will come forward. There is no full cure.”. Genn Greymane is a prime example of worgen emotions, and is depicted throughout comics and novels as slightly more easy to anger than the regular human. Not only that, worgen have those instincts to hunt, which grow stronger when they take worgen form.
Now, physically, on the other hand, worgen in human form appear fully human. This perfect disguise allowed the Gilnean Wolf Cult to shapeshift and sneak inside the city to recruit more. In regards to physical strength, we do not have any instances of them doing inhuman heavylifting in human form. We do, however, have feats of agility and awareness in lore. In Curse of the Worgen Issue 1 pg 12, we see some in human form being chased on horseback, outrunning the horse and jumping through the forest, only then turning into worgen.
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https://imgur.com/dGIEHyd- Curse of the Worgen, Issue 1, pg 14
This could just be them outmaneuvering the horseman, but we have another quote supporting agility and stealth in human form.
- It was next to impossible to come upon the archdruid without his noticing, but the speaker had done just that. Fortunately, Malfurion was not one of tender nerve. He simply turned and, to no surprise, found himself gazing down slightly at a human. - Wolfheart, pg. 90
- Eadrik moved as silently as any night elf, no mean feat for a human. He said nothing as they exited the city, but Malfurion noted that he finally relaxed as they entered the forest. The archdruid found it fascinating that a human would be more relieved to be in the wilderness than in a city. - Wolfheart, pg. 91
In addition, there may be some slight enhanced senses as well, considering Genn Greymane sensing Mathias Shaw - the world renowned spy - coming up behind him in a crowd of people during the Legion epilogue cinematic. His nose seems to move ever so slightly, and he need not even look over his shoulder to know exactly who it is. To which, Mathias looks surprised.
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https://www.youtube.com/watch?v=L6WlY4KQqFU
To summarize, when it comes to any physical perks to a worgen’s human form, compared to a regular human, there might be a few. But even so, as lithe or aware as they may be in human form, it is also said that worgen still feel the aches of old ache in human form, but not so in worgen form.
- The hair on the back of his neck suddenly stood on end. Someone was behind him. As with many worgen, Genn more often than not remained in his lupine form. He felt stronger, younger that way. When human, the king felt the aches of age. But being worgen now meant that the one behind him had failed if his attempt had been to sneak up on Genn. Moving with the swiftness and grace of the worgen shape, he turned to meet the potential threat with claws and teeth. - Wolfheart pg. 316-317
I hope that answered your question well! Worgen do not get to do inhuman crazy stunts in human form, as you might see on MTV or other werewolf shows, but there -are- a few things characters can do in roleplay as those subtle reminders that you aren’t human. 