SRR spr - Jam x2
The Heart Holders increases the heart counters, and thus allow you to live longer. They are found in the wilderness and in caves. Bring a wide variety of items with you as you will need several kinds to get them all. See here for the exact locations.
# Location Required Description
1 Lilac Fields(1) On a high up pillar platform.
2 Tangle Forest(3b) Inside a cave.
3 Lighthouse Inside an underwater cave at the bottom to the right.