Its not regular, just seldom and big.
But that is due to where we are in our life cycle.
We acted like rabbits for first 5-6 years "sweat pouring off us".
Then children came along, then it became much less frequent, but now children are older and can answer the phone, make a cup of tea, so should be more so again. But it isn't because DP has a semi-professional hobby and I have a business to tend to we meet less frequently.
About 4-5 times a year when we take a long weekend away and then we are back to "a bit of sweat". It is like an affair, but without the guilt.
In between, we sort ourselves out. Sometimes, we will help out the other, usually me going dow..... TMI so here I stop.