Ben Affleck has been making frequent trips home from rehab in order to use his own personal gym.

The 46-year-old actor admitted himself into a rehabilitation facility for his alcohol addiction two weeks ago - after having previously completed stints in 2001 and 2017 - and although he's been staying at a live-in centre, he's still been visiting his home to work out.

An insider told People magazine: ''Ben is working out at his house. He goes home to his gym to work out with his trainers.

''Since last week, he's been driven from the clinic every day from rehab to the house to work out. For a few hours a day. He's always accompanied by his coach and therapist.''

The news comes after it was reported his third visit to rehab - which came following an intervention from his ex-wife Jennifer Garner, with whom he has children Violet, 12, Seraphina, nine, and Samuel, six - is more ''intense'' than ever, as the 'Justice League' star wants to make sure he's being put through his paces in order to get the best results.

A source said: ''Ben is there for as long as he needs to be. Like before, he is dedicated to beating this, and however long they feel he should be in, that is the time limit.

''Ben seems to be taking it very seriously. This isn't like the other rehabs he has done in the past. This is a residential program, and he is staying on property. He is not at the point where he has a lot of freedom or is able to leave. He is doing intense counselling and spending a lot of time in meetings and therapy. He also has time in his day to workout and spend time outside in the mountains.''

And Jennifer is said to be thrilled with his decision to return to rehab.

The insider added: ''He told Jen and was not resistant. He asked her to take him and she wanted to be there for him.

''She wants him to be clean and healthy and will help him get there if he's committed. She is glad he is in a safe place and getting the help he needs.''