Warriors doctor John Mayhew is in "good spirits" five days after suffering a heart attack.

The former All Blacks and Blues doctor was up and doing well, his wife Sue Mayhew told the Herald this morning.

"He's doing really well," she said.

"He's good, he's in good spirits."

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Dr Mayhew, 60, collapsed after an exercise class in Auckland on Tuesday, and a family spokesperson last week confirmed he had a cardiac arrest as a result of a heart problem. He was successfully resuscitated and put into an induced coma for a period in intensive care at North Shore Hospital.

However, the Warriors doctor was now awake and recovering well, his wife said.

"I know that people are quite concerned, but he looks good and he's doing well," she said.

She added: "He looks good, he's chatting and he's got a good sense of humour. He'll be in there for a bit longer, but he's looking good."

While he was making progress, he was not yet ready to talk to media himself, Mrs Mayhew said.

Dr Mayhew was on the sidelines for 131 All Blacks tests, and has been the team doctor for the Warriors for most of the past decade. He was appointed an Officer of the New Zealand Order of Merit for his services to sports medicine in the New Year's Honours list.

He was close to the late All Blacks star Jonah Lomu, and acted as a pallbearer at Lomu's Eden Park memorial service, following his death, aged 40, last November.