That's right. Just being out in the sun for several hours per day will do wonders for you.
Naturally, you'll want to start engaging in activities that increase your heart rate to the level necessary to remain healthy over the many decades of your life.
My understanding is that _several_ hours per day can mean a very significant chance of skin cancer down the road especially for lighter skinned people in subtropical or tropical regions.
Active ingredients in most sunscreens are carcinogenic upon exposure to sunlight. Careful about studies which say the sun causes cancer in light-skinned people without accounting for their increased use of (non-mineral-based) sunscreen.
Consider which industry profits from and funds such studies.
Naturally, you'll want to start engaging in activities that increase your heart rate to the level necessary to remain healthy over the many decades of your life.