On the issue of coercion:
In several Muslim countries it is illegal for anyone, even non-Muslims, to eat or drink in public during daylight hours. You can be fined, imprisoned or deported for breaking the fast. The government and all of society expects you to fast. The reality is of course that not every one is devout and so there are a lot of people getting around it. As was previously noted, it is not uncommon for schedules to flip flop and people to spend all night up eating and drinking and then sleep the day away.
I fasted Ramadan for 5 years and have done a fairly intensive Lent for 4. My personal experience is that they can be equally difficult.
Ramadan challenges:
No food and water for hours…reallly long hours…
I frequently got really sick when I broke my fast
Ramadan “eases”
A whole bunch of people are doing the exact same thing you are
There is no discernment about how to fast
If you are a woman, you get a week off as you don’t fast on your period
You can eat and drink anything at night - you still get 2 full meals with treats!
Days 8-25 are actually pretty easy (except for the water). You get in the groove of it.
Lent challenges:
Being all on your own
Trying to decide if you are doing too much or should be doing more
Giving up a whole segment of your regular diet while still eating
Fasting while still eating
Lent eases:
There is no sin incurred if you fail
I personally was a champ at Ramadan and struggle at Lent. For me, Ramadan was an all or nothing thing. Lent is an exercise in moderation and temperance - and way harder!
That said I really admire my Muslim friends not drinking water in June!