As-Salaam alaikum,
In Ayat 154 of Surat Baqra of the Holy Qur'an (2:154), Allah Ta'ala says:--

"And say not of those who are slain in the Way of Allah: 'They are dead'.
Nay, they are living, though you perceive it not."

This Ayat is explained by/in Hadith of Sunan Abu Dawud, Kitab Jihad, wherein the Prophet, Sallallahu alaihi Wasallam, said:--

"When your brothers from Uhud were taken (by death), Allah placed their spirits in
a green bird that drinks from the rivers of Paradise, eats its fruits and rests near
golden candles hanging in the shadow of the Throne.

When they saw that their food, drink and resting places were good, they said:
'who will let our brothers know that we are alive in Paradise, and that we receive
our subsistence, that they may not skimp in the struggle, and that they do not
abdicate in the war?"

Allah, Subhanahu Wa Ta'ala, said: "I will let them know". And it was then
that Allah Ta'ala brought down: "And say not of those who are slain..." (2:154)

In anycase, if your rationale for life is that you eat and move around, they also eat. Whatever you eat of grain, fruit or meat is a product of dust; you/we consume dust, they consume Noor (Divine Light)...