Condition

When you describe the situation in which someone lives or works (existing circumstances), use conditions: ‘Latest reports from the capital suggest that the conditions there are getting worse.’ ‘How do they manage to survive in such a dreadful condition?’

In good condition/shape = physically fit and strong because you do exercise: ‘Most of the team had kept themselves in good condition during the summer months.’

To enquire about or refer to someone’s general state of health, use well or fit and well.