How do fix these two sentences below:

1. Stretching helped me increase my muscle strength and relieving tension on tight strained muscles, which I often used during my stress moment
2. Eating two cups of ice-cream every night is my habit because it has sweet and delicious taste, which always makes me feel hyper and pleased and recalls my happy moments in the past, such as party at the beach and my 18th birthday party.

1. because "to increase" is understood (infinitive) for a parallel construction, "to relieve" tension Of course you may omit the word "to" in both cases.

2. it has a sweet and delicious taste......such as a party

Sra