Baher Mohamed is seen behind bars inside Tora prison in Cairo in August, 2015 [Asmaa Waguih/Reuters]
Al Jazeera's Baher Mohamed, Mohamed Fahmy and Peter Greste along with seven colleagues outside Egypt, were accused of spreading "false news" during their coverage of demonstrations protesting a military overthrow of President Mohamed Morsi in 2013.
They were arrested on Sunday, December 29 that year.
Mohamed spent 437 days in jail, many of them in solitary confinement. He was finally freed in September 2015.
As journalists around the globe mark World Press Freedom Day on May 3, another Al Jazeera reporter, Mahmoud Hussein, remains in jail after being arrested on December 20, 2016.
Some of his detention has also been spent in solitary confinement.
These are Mohamed's reflections on his imprisonment, solitary confinement, and a weighing sense of guilt as many experience the same, abusive treatment he endured.
After a long day of interrogation, the person who has been questioning me says, with a fake smile on his face, "You know what? I believe you didn't do anything wrong. I will send you to a nice place to rest".
He left and the guards came in.
"I find myself alone in a dark room, it's about two square metres and surrounded by four cement walls. Broken toilet on the left and a filthy sink next to it."
The guards placed handcuffs on my hands. Then they dragged me to a nasty and smelly police pick-up truck. I kept on asking, "Where are you taking me? And can you remove my handcuffs?" I didn't get an answer.
Finally, the pick-up truck stops after almost 45 minutes of driving.
I find myself inside a huge complex and in front of me a big steel gate. We wait for five minutes until someone brings the keys because the gate doesn't open from inside.
Several officers are waiting for my arrival and one of them shouts at me, "Take off all your clothes immediately". I ask him, "Why, where am I?".
Another officer looks at me smiling, and says, "You are in Scorpion maximum security prison".
The first officer repeatedly shouts: "I said, 'Take off all your clothes' and I don't want to hear you speaking!"
I remove my clothes and they hand me a disgusting polyester white uniform and two dusty, dirty and sickening blankets.
It is freezing, so I ask to keep my coat but the answer is, "We want you to freeze to death".
Two officers and three guards walk me to my cell. I am pushed into a cell and the guard slams the door.
I find myself alone in a dark room; it's around two square metres and surrounded by four cement walls. Broken toilet on the left and a filthy sink next to it. The sink is designed in such a way that when the tap is opened, the water sputters everywhere.
There is nothing to sleep on and there are insects and cockroaches everywhere. Mosquitos are all over the wall. There is a hole in the wall across the cell and it is covered with bars and wire mesh. I am shaking from the cold and I can't use the blankets.
I take off my shoes, use them as a pillow, and lie on the floor. I am kept in this solitary confinement cell for 1,124 hours. I am not allowed visits from my family or my lawyer. During these hours, I don't see the sunlight and am not allowed out, except for when I am sent for interrogation.
I have cried for nights and days. Nightmares wake me up almost every night. One night, I cry because I dream that my father has died and I know I won't see him again. Another time, I cry the entire night because an officer threatens me that if I don't sign fake confessions, he will torture and rape my wife and mother in front of me.
At a certain point, I need someone to speak to. This someone is "Wilson". Wilson is an onion. Wilson helps me a lot and is a good listener.
I keep asking myself "Why am I here?" I did nothing wrong. I was only doing my job professionally. That leads me to realise that I'm in prison for something bigger than me.
A Muslim Brotherhood member gestures from a defendants' cage in a courtroom in Torah prison in 2015 [File: Amr Nabil/AP]]
I'm in prison for a cause, I'm in jail for press freedom. I have to stand strong and fight for that superior principle. I start thinking of those who stood for big causes, such as Gandhi and Mandela.
They were not different, they were humans and stood for something big. At this moment, I decide to be strong and fight for this principle that I truly believe in. I know that it won't be an easy fight and I find myself having to take a long breath.
Here, I realise that human mind is magnificent. It can lead you to craziness or peace. I decide to live day after day and night after night. I don't have to think of the next hour or the next day. I should live the moment and control my mind.
I know that I will have down times and I have to live with it. I know that I may stay in prison for years, but deep in my heart and mind, I know that good always wins.
I start to look after Wilson, making sure I change his water every day.
I start exercising in the cell, one hour in the morning and one hour at night. I start listening to the testimonies of Muslim Brotherhood officials and talk to them through the doors. I feel that I'm in this prison with them for a reason. I should listen to what they say and write about it someday. Their testimonies are very important and they were in power during one of the most crucial times of Egypt.
On February 14, I am transferred to a better prison. I believe my colleagues and I have been moved to this prison for two reasons.
First, a huge campaign was launched to release us. Second, nationalities. My colleagues Peter Greste and Mohamed Fahmy are from Australia and Canada, respectively. What I mean is they were foreigners and not Egyptians. That is also the same reason I was released from prison, I was in a group with foreigners.
Despite the love I have for Peter and Mohamed, it really hurts that my country treats its citizens worse than foreigners, why my country Egypt deals with foreigners better than Egyptians.
I recall here two incidents. The first, when Peter was released. The warden didn't tell me Peter was being deported. When I found out later, I went to thank him - he cared for my feelings and didn't tell me. He became very angry. He said: "if I was doing a police operation with foreign officers and something wrong happens; are they going to give up on me?"
Baher Mohamed has described the moment he reunited with his family after jail as 'the best moment of my life' [Al Jazeera]
The second is more recent, after my own release, when an Italian PhD student, Giulio Regeni, was kidnapped, tortured and killed by security forces.
The Italian media said something true and tough, "He was killed as if he was Egyptian".
If anyone is Egyptian, half Egyptian or a dual citizen, he or she is likely to be thrown in prison for a very long time, possibly for good.
Two living examples include Ibrahim Halawa, a young Irishman of Egyptian parentage who was arrested more than three years ago when he was just 17 years old, and Aya Hegazy, a young Egyptian American in jail for almost three years for helping street children.
Imagine then, how hard it is for those who with only Egyptian citizenship. Imagine how hard seeking justice will be for Al Jazeera journalist Mahmoud Hussein, and the tens of other reporters in Egyptian prisons.
It is really killing me. I have a huge amount of guilt that I'm not doing anything for journalists behind bars. Unfortunately, there is not enough campaigning going on for those who are in jail in Egypt. I wish I could do more than writing about them, but I don't know where to start.
If I have could send a letter to those in jail, I would say...
Dear Mahmoud, Ibrahim, Sohaib, Khalid, Samhy, Fakharany, Adly, Shawkan and every journalist in prison...
You are not forgotten. You are always on people's minds. I'm sorry that there is not enough campaigning for you. I promise you that I'll do my best to cover your stories. Your steadfastness is inspiring me and the world.
I keep tell my children about each single one of you.
Ibrahim, my son wants to be like you. He wants to protect his sisters like you did.
Shawkan, my daughter wants to become a photojournalist.
And Aya,congratulations to you and your husband on being acquitted - may this be a sign of things to come. My daughter want to help poor children like you do.
I don't know if this is right or wrong, but my children hate the police because of what has been happening to you and me.
Every one of you should be proud. Be sure that good will win and I won't allow you to give in.
Follow Baher Mohamed on Twitter: @Bahrooz