Anal depth training is a sexual activity that involves inserting objects as deep as possible into the anus in order to reach and pass the sigmoid curve.

The human rectum is naturally shallow ranging from about one inch to two inches and a few centimeters. However, the rectum has flexible muscles and can take in a dildo that is as big as your imagination as long as you stay safe while at it.

Anal depth play is different from stretching or fisting in that the former is only concerned with the length of the inserted anal toys, rather than the girth. 

There are two main categories of people that are inclined towards anal depth training; anal aficionados who are looking for new challenges and BDSM enthusiasts.

Whatever the category is, people do anal depth training for so many reasons but it all boils down to the different levels of sexual satisfaction they get from it.

Being able to have longer sex toys inserted is one of many reasons people do anal depth training. With this ability comes the expansion of the anus that eventually brings in pleasurable sensations.

Anal Depth Training is also a perfect means for applying pressure to the prostate gland for penis owners. This pressure on the prostate can produce stronger and longer orgasms.

Anonymous on Reddit tells us why he's achieved from anal depth training.

I'm (24/m) a bisexual guy who loves anal. I've been masturbating anally for years now and the feeling of getting filled really does it for me. I've been going for wider toys and a few months ago I was able to fist myself for the first time.

Anal Depth Training requires a lot of mental and physical preparation before engaging in it. Here are some tips you can follow for an efficient and safe anal depth training;

• Prepare yourself by first getting an enema. This is a normal anal play routine. It ensures thorough cleaning and prevents you from making a mess and ruining your fun time.
• Confirm that your depth training dildos and other needed sex toys are well-sanitized.
• Mentally associate deep anal pressure with. Your mind has to be ready for this sort of anal play.
• Once your depth training dildo is inserted into your rectum, apply gentle but persistent pressure on your sigmoid curve. It might take days or weeks before the sigmoid curve finally lets you pass through so you need to be persistent. But don't forget to be gentle while at it.
• You sure know this already but we can't help but emphasize on it. Please use lube. A whole lot of them. The anus is not self-lubricating and you risk the possibility of tears and infection if you do not use enough lube. We recommend water-based lube.
• Use only appropriate anal depth training toys. The ideal ones are long, slim, flexible and come with a tapered tip or flared base to prevent them from getting sucked up in the anus.
• Ensure that your toys are made of skin-safe and high quality materials. We recommend toys made of silicone material.
• Lastly, please listen to your body. A little discomfort is expected especially for first-time anal depth trainers. But you shouldn't feel pain. Stop immediately it gets painful.

Zakkary Z on Quora advises;

It’s a cliche, but it’s about the journey. Give yourself the time to learn how your body is shaped. Know your limits.

Finding the right position for anal depth training does not only ensure you're training in the safest position possible, but also increases your overall pleasure. Check out some positions to try out while anal training:

1. On Your Back: Laying on your back with your ass slightly elevated is one of the most popular positions. People often say it aids in relaxing the internal muscles. It feels less like pushing a toy up inside and gravity gently dropping it in.
2. In The Tub: Worrying about the messy side of anal play may sometimes lead to stress of cleaning up. This may be prevented by stretching out in the tub or the shower.
3. On Your Side: Another great position is to lay on your side with your knees bent. This way, you can comfortably reach back and down to your rectum without putting undue pressure on your back. It may also help you relax and focus on what your body is feeling.
4. Face down: This is great if you are engaging in anal depth training with a partner. Let them do the inserting while you lay face down. You may not be able to reach your rectum though they definitely can. This is also a great option as it is stress-free.
   
   

Anal depth training is clearly to train the depth, those products below are the most appropriated to go deep down any cavities:

● HOW DEEP CAN I PENETRATE MY ANUS?

Your anus can be deeply penetrated. Bodies are different so how much of an anal stretch depends on your anatomy. The human anal canal is approximately five inches which is about 12 centimeters) deep. But under the right conditions, it can accommodate a foot or more. In penetrating your anus, don't force anything and just see where you end up.

● IS ANAL DEPTH TRAINING DANGEROUS?

Anal play can be dangerous. Because the anal cavity was not made to take things into the human body but rather push them out. So any type of anal penetration play is a risk but it can be done safely.

Anal play has become one of the most popular advanced sexual activities which promises heightened sexual pleasure. Although risky, enough patience plus consistent practice will provide a smooth and pleasurable experience. Good luck.